Using cookies in a report studio report

I’d appreciate some help on using cookies in a report studio report.
I would like to implement a value prompt with some values and have a cookie created for the same prompt, so that the user doesn’t need to set the prompt every time he runs the report.

Also how to access the prompt value in an html page or vice versa ( accesing an html dropdown value in cognos report )


what about setting a default value in the prompts ?

I dont understand your last question --> javascript?