Hi, i've got in my jrxml: <parameter name="PROJECT_IDS" class="java.util.ArrayList"> <parameterDescription><![CDATA[Projects]]></parameterDescription> <defaultValueExpression><![CDATA[]]></defaultValueExpression> </parameter> Within the Jasper Server GUI I can easily create an element which collects the IDs and passes them correctly to the report. But how do I do this in an URL: GET https://<server>/rest_v2/reports/<reportPath>/<reportName>.<reportFormat>?PROJECT_IDS=... I tried "1,2,3,4" and "[1,2,3,4]" but none of them worked :-( Thx for any hints, Bernd