Cognos 8.1 : Error message when try to display "NO DATA FOUND"

[satheeshgouda]

In one list report, When the data is not returned by the report, Want to display No Data Found in the Report Viewer.

Tried to achieve the above with the Conditional Formatting. In the conditional Explorer, I created a Boolean variable, in the expression definition of the variable, used query item of the Report's query. While running the report, the following Error Message is displayed CRX-API-0005.
also tried with string variable in conditional explorer.Searched for the following error message CRX-API-0005 in the Google/ittoolbox.com, It seems, its bug with Cognos 8, Any body faced this problem or has workaround for this problem?

But in the support.cognos.com, For ReportNet, there is a document given for display of  No Data Found When there is no data fetched by the report's query , Can we acheive the same in 8.1 or Is this bug with Cognos 8.1. Please help ASAP as its very urgent.

[Suraj]

what is your logic for the variable?