https://community.qlik.com/t5/Talend-Studio/resolved-tWebService-quot-You-must-provide-a-Map-to-create-a/m-p/2246369#M31916 This Error comes as soon as i try to set tWebservice parameter to a list with complexTypes.. List&lt;String[]&gt; for example <BR />Did anyone had success creating such Map? Tue, 14 Aug 2012 15:05:00 GMT Anonymous 2012-08-14T15:05:00Z https://community.qlik.com/t5/Talend-Studio/resolved-tWebService-quot-You-must-provide-a-Map-to-create-a/m-p/2246369#M31916 This Error comes as soon as i try to set tWebservice parameter to a list with complexTypes.. List&lt;String[]&gt; for example <BR />Did anyone had success creating such Map? Tue, 14 Aug 2012 15:05:00 GMT https://community.qlik.com/t5/Talend-Studio/resolved-tWebService-quot-You-must-provide-a-Map-to-create-a/m-p/2246369#M31916 Anonymous 2012-08-14T15:05:00Z https://community.qlik.com/t5/Talend-Studio/resolved-tWebService-quot-You-must-provide-a-Map-to-create-a/m-p/2246370#M31917 i resolved it myself.. <BR />here is the code to correctly map an complexObjectArray <BR /> <PRE>java.util.List&lt;java.util.Map&lt;String,String&gt;&gt; arguments = new java.util.ArrayList&lt;java.util.Map&lt;String,String&gt;&gt;();<BR />java.util.Map&lt;String, String&gt; argMap = new java.util.HashMap&lt;String, String&gt;();<BR />argMap.put("key", "entity_id");<BR />argMap.put("value", "777");<BR />arguments.add(argMap);<BR />row.myArguments = arguments; //or globalMap.put("myArguments", arguments); //whatever you may use..</PRE> Tue, 14 Aug 2012 20:20:36 GMT https://community.qlik.com/t5/Talend-Studio/resolved-tWebService-quot-You-must-provide-a-Map-to-create-a/m-p/2246370#M31917 Anonymous 2012-08-14T20:20:36Z