diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries/external-library/upperCase/upperCase.1.ddl.aql b/asterixdb/asterix-app/src/test/resources/runtimets/queries/external-library/upperCase/upperCase.1.ddl.aql
deleted file mode 100644
index 2dcd24d..0000000
--- a/asterixdb/asterix-app/src/test/resources/runtimets/queries/external-library/upperCase/upperCase.1.ddl.aql
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-drop dataverse externallibtest if exists;
-create dataverse externallibtest;
-use dataverse externallibtest;
-
-create type TextType if not exists as open {
-    id: int32,
-    text: string
-};
-
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries/external-library/upperCase/upperCase.2.lib.aql b/asterixdb/asterix-app/src/test/resources/runtimets/queries/external-library/upperCase/upperCase.2.lib.aql
deleted file mode 100644
index d1e0e87..0000000
--- a/asterixdb/asterix-app/src/test/resources/runtimets/queries/external-library/upperCase/upperCase.2.lib.aql
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-install externallibtest testlib target/data/externallib/asterix-external-data-testlib.zip
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries/external-library/upperCase/upperCase.3.query.aql b/asterixdb/asterix-app/src/test/resources/runtimets/queries/external-library/upperCase/upperCase.3.query.aql
deleted file mode 100644
index 5f0b86c..0000000
--- a/asterixdb/asterix-app/src/test/resources/runtimets/queries/external-library/upperCase/upperCase.3.query.aql
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-use dataverse externallibtest;
-
-let $i:={"id":1, "text":"lower text"}
-return testlib#toUpper($i);
-
-let $i:=testlib#toUpper({"id":1, "text":"lower text"})
-return $i;
-
-let $i:= {"field1" : testlib#toUpper({"id":1, "text":"lower text"}), "field2": 123}
-return $i;
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries/external-library/upperCase/upperCase.4.lib.aql b/asterixdb/asterix-app/src/test/resources/runtimets/queries/external-library/upperCase/upperCase.4.lib.aql
deleted file mode 100644
index 86af80f..0000000
--- a/asterixdb/asterix-app/src/test/resources/runtimets/queries/external-library/upperCase/upperCase.4.lib.aql
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-uninstall externallibtest testlib
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/external-library/upperCase/upperCase.1.ddl.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/external-library/upperCase/upperCase.1.ddl.sqlpp
index 8130de2..292e4e1 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/external-library/upperCase/upperCase.1.ddl.sqlpp
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/external-library/upperCase/upperCase.1.ddl.sqlpp
@@ -20,7 +20,11 @@
 CREATE DATAVERSE  externallibtest;
 USE externallibtest;
 
+create type list_element as open{
+    text: string
+};
+
 create type TextType if not exists as open {
     id: int32,
-    text: string
+    text_list: [list_element]
 };
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/external-library/upperCase/upperCase.3.query.sqlpp b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/external-library/upperCase/upperCase.3.query.sqlpp
index f361232..743d39a 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/external-library/upperCase/upperCase.3.query.sqlpp
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/external-library/upperCase/upperCase.3.query.sqlpp
@@ -18,11 +18,11 @@
  */
 use externallibtest;
 
-let i={"id":1, "text":"lower text"}
+let i={"id":1, "text_list": [{"text":"lower text1"}, {"text":"lower text2"}]}
 select value `testlib#toUpper`(i);
 
-let i=`testlib#toUpper`({"id":1, "text":"lower text"})
+let i=`testlib#toUpper`({"id":1, "text_list":[{"text":"lower text"}]})
 select value i;
 
-let i= {"field1" : `testlib#toUpper`({"id":1, "text":"lower text"}), "field2": 123}
+let i= {"field1" : `testlib#toUpper`({"id":1, "text_list":[{"text":"lower text"}]}), "field2": 123}
 select value i;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/external-library/upperCase/upperCase.1.adm b/asterixdb/asterix-app/src/test/resources/runtimets/results/external-library/upperCase/upperCase.1.adm
index e4af2be..2efaa4f 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/results/external-library/upperCase/upperCase.1.adm
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/external-library/upperCase/upperCase.1.adm
@@ -1,3 +1,3 @@
-{ "id": -1, "text": "LOWER TEXT" }
-{ "id": -1, "text": "LOWER TEXT" }
-{ "field1": { "id": -1, "text": "LOWER TEXT" }, "field2": 123 }
+{ "id": -1, "text_list": [ { "text": "lower text1" }, { "text": "lower text2" } ], "element_n": 2, "capitalized_list": [ "LOWER TEXT1", "LOWER TEXT2" ] }
+{ "id": -1, "text_list": [ { "text": "lower text" } ], "element_n": 1, "capitalized_list": [ "LOWER TEXT" ] }
+{ "field1": { "id": -1, "text_list": [ { "text": "lower text" } ], "element_n": 1, "capitalized_list": [ "LOWER TEXT" ] }, "field2": 123 }
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_it.xml b/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_it.xml
index 2b7d4f0..e77b32b 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_it.xml
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_it.xml
@@ -43,11 +43,6 @@
       </compilation-unit>
     </test-case>
     <test-case FilePath="external-library">
-      <compilation-unit name="upperCase">
-        <output-dir compare="Text">upperCase</output-dir>
-      </compilation-unit>
-    </test-case>
-    <test-case FilePath="external-library">
       <compilation-unit name="keyword_detector">
         <output-dir compare="Text">keyword_detector</output-dir>
       </compilation-unit>
diff --git a/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/library/java/JObjectAccessors.java b/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/library/java/JObjectAccessors.java
index 2678a8d..1a6553c 100644
--- a/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/library/java/JObjectAccessors.java
+++ b/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/library/java/JObjectAccessors.java
@@ -82,8 +82,10 @@
 import org.apache.asterix.om.pointables.AListVisitablePointable;
 import org.apache.asterix.om.pointables.ARecordVisitablePointable;
 import org.apache.asterix.om.pointables.base.IVisitablePointable;
+import org.apache.asterix.om.types.AOrderedListType;
 import org.apache.asterix.om.types.ARecordType;
 import org.apache.asterix.om.types.ATypeTag;
+import org.apache.asterix.om.types.AbstractCollectionType;
 import org.apache.asterix.om.types.BuiltinType;
 import org.apache.asterix.om.types.EnumDeserializer;
 import org.apache.asterix.om.types.IAType;
@@ -582,17 +584,12 @@
         public IJObject access(AListVisitablePointable pointable, IObjectPool<IJObject, IAType> objectPool,
                 IAType listType, JObjectPointableVisitor pointableVisitor) throws HyracksDataException {
             List<IVisitablePointable> items = pointable.getItems();
-            List<IVisitablePointable> itemTags = pointable.getItemTags();
             JList list = pointable.ordered() ? new JOrderedList(listType) : new JUnorderedList(listType);
             IJObject listItem;
-            int index = 0;
             for (IVisitablePointable itemPointable : items) {
-                IVisitablePointable itemTagPointable = itemTags.get(index);
-                ATypeTag itemTypeTag = EnumDeserializer.ATYPETAGDESERIALIZER
-                        .deserialize(itemTagPointable.getByteArray()[itemTagPointable.getStartOffset()]);
-                final IAType fieldType = TypeTagUtil.getBuiltinTypeByTag(itemTypeTag);
-                typeInfo.reset(fieldType, itemTypeTag);
-                switch (itemTypeTag) {
+                final IAType fieldType = ((AbstractCollectionType) listType).getItemType();
+                typeInfo.reset(fieldType, fieldType.getTypeTag());
+                switch (typeInfo.getTypeTag()) {
                     case OBJECT:
                         listItem = pointableVisitor.visit((ARecordVisitablePointable) itemPointable, typeInfo);
                         break;
diff --git a/asterixdb/asterix-external-data/src/test/java/org/apache/asterix/external/library/UpperCaseFunction.java b/asterixdb/asterix-external-data/src/test/java/org/apache/asterix/external/library/UpperCaseFunction.java
index 82f77ac..398504a 100644
--- a/asterixdb/asterix-external-data/src/test/java/org/apache/asterix/external/library/UpperCaseFunction.java
+++ b/asterixdb/asterix-external-data/src/test/java/org/apache/asterix/external/library/UpperCaseFunction.java
@@ -21,8 +21,10 @@
 import org.apache.asterix.external.api.IExternalScalarFunction;
 import org.apache.asterix.external.api.IFunctionHelper;
 import org.apache.asterix.external.library.java.base.JInt;
+import org.apache.asterix.external.library.java.base.JOrderedList;
 import org.apache.asterix.external.library.java.base.JRecord;
 import org.apache.asterix.external.library.java.base.JString;
+import org.apache.asterix.om.types.BuiltinType;
 
 /**
  * Accepts an input record of type Open{ id: int32, text: string }
@@ -43,16 +45,23 @@
     @Override
     public void evaluate(IFunctionHelper functionHelper) throws Exception {
         JRecord inputRecord = (JRecord) functionHelper.getArgument(0);
+        JOrderedList textList = (JOrderedList) inputRecord.getValueByName("text_list");
+        JOrderedList capList = new JOrderedList(BuiltinType.ASTRING);
         JInt id = (JInt) inputRecord.getValueByName("id");
-        id.setValue(id.getValue() * -1); // for maintaining uniqueness
-                                         // constraint in the case when
-                                         // output is re-inserted into source
-                                         // dataset
-        JString text = (JString) inputRecord.getValueByName("text");
-        text.setValue(text.getValue().toUpperCase());
+        id.setValue(id.getValue() * -1);
+
+        for (int iter1 = 0; iter1 < textList.getValue().size(); iter1++) {
+            JRecord originalElement = (JRecord) textList.getValue().get(iter1);
+            JString originalText = (JString) originalElement.getValueByName("text");
+            JString capText = new JString(originalText.getValue().toUpperCase());
+            capList.getValue().add(capText);
+        }
+        JInt element_n = new JInt(textList.size());
         JRecord result = (JRecord) functionHelper.getResultObject();
         result.setField("id", id);
-        result.setField("text", text);
+        result.setField("text_list", textList);
+        result.setField("element_n", element_n);
+        result.setField("capitalized_list", capList);
         functionHelper.setResult(result);
     }
 }