Problem with Report Created with BIRT

Good Morning,

I designed a custom report with BIRT that takes two parameters as input (both are dynamic list boxes that allow multiple values which I suspect are read into two arrays at startup).

In order to filter my results based on these arrays, in the data set "Filters" tab I simply specified that the filtered data had to be "in" the parameter. Just to give it more context, a parameter I am using is called "inputOwners" and the data I want to filter is "CONTRIBUTOR_NAME" from the LIVE_WORKITEM_CNT table. My filter reads:

row In params.value

When I preview the report I can set the two parameters and the filtered information displays perfectly, and I am happy. Now comes the problem.

When I create a report template in RTC using the rptdesign file that BIRT generates and create a report based on the template, I get the following error once I have set the parameters and run the report via the web interface:

http://i.imgur.com/59cUV.png

I don't understand why the same report won't work in RTC when it works perfectly in BIRT.

Why does this happen, and how can I solve it?

Thank you in advance!

Best regards,

Andrew