Re-prompt issue after passing parameter at URL

Cognos 10 Business Intelligence Report Studio
1

I am planning to put my a prompt report link on a web application, adding ā€œ&p_Languagecode=English&run.prompt=falseā€ at the end of the URL link. It works fine after I click the link, then after I hit the triangle button to re-prompt, then the ā€œLanguagecodeā€ parameter didnā€™t work, it shows all the languages possible.

So is there any way that I could solve this problem?

is it expected behavior or I am missing something here? Very new to Cognos, so any comments will be greatly appreciated.

thanks