Query browser prompt selection odd functioning

Hi All,

I have a query browser connectivity with a prompt, i have connected this prompt to an excel sheet. The selector(prompt i/p), has two formats one is a number say some 38491, and the other in the name of a state. Now when i run the query i get the following error,

Request processing failed. (XLS 000009)

Request processing failed. (XLS 000009) [] <com.businessobjects.semanticlayer.qt.QTException: Query script generation failed. See your BusinessObjects administrator. {0} (WIS 00013)>

this occurs only when I pass the number but when i pass the Text format (name of state) it works fine and the error does not pop out, can anyone point out what problem this is. The number selection (38491) passes as a text only, i even tried passing it alone and still does not work. I appreciate any helps or tips,

Thanks,

Fazith