Hi, I created a MySql Stored Procedure which executes fine and displayed data in Toad MySql and in Report Query window when clicked on Refresh Preview Data. When am getting message 'Error:null" when clicked on 'Read Fields" button. Below is the exception written in the log file java.lang.NullPointerException at com.jaspersoft.ireport.designer.data.ReportQueryDialog.recursiveInterpreter(ReportQueryDialog.java:2579) at com.jaspersoft.ireport.designer.data.ReportQueryDialog$FieldReader.run(ReportQueryDialog.java:773)[/code]Query written in Report Query window CALL SP_REPORTS_CONTACT_DETAILS('fc0f18eb-e201-4e77-8f18-ebe2019e778c', 'd07318fb-2e1a-42ab-b318-fb2e1a42111')[/code]Am using iReport 5.5 with MySql 5.5 Thanks, Madan N