Portal view not showing search page, loading all data directly

[Prakash Bhai]

Hi All,

when I run the report from Public folders, I am able to get the prompt page screen, but where as, when I run the report directly from Cognos Portal,The data is getting loaded automatically with out showing the prompt screen. 
Note: 1)The report has been set to Run rather than to view the last report.
          2)prompts are empty when I saved the report and the settings in the report properties are set to always prompt. (report studio > File > Clear Parameter Values and save.)

Even then also, the data is getting loaded automatically.

How to fix this Issue. Please suggest me.

Regards,

Ram.