'rawesso' wrote on '10: <br /> I just added two examples build in your BIRT version. The are using the Classic Models DB so you should be able to run them. Test_param_no_link.rptdesign is what you did and Test_param_linked.rptdesign is what you should do in order to filter data according to the parameter value. Note that the parameter has to be linked in the data set's "parameter" tab and in the Data set's SQL query.<br /> <br /> Hope this helps.<br /> <br /> I did the following steps<br /> 1) created a dataset<br /> 2) created table and added the required columns<br /> 3) created a parameter<br /> 4) changed the query of the dataset ( where gender = ? ), it throws an error immediately