Problem for the prompts will display at the top of the report in the browser

hye everyone,
i have Problem for the prompts will display at the top of the report in the browser :

1)go to the report manager on computer and set the

set the Prompt User check boxes to checked.

--> auto check

2)select the report viewer control, if you are using it, and set the Parameters property to false.

--> the eror mesage will be display

" The ' field " parameter is missing value. "

what should i do...any idea

thanks in advance

thank you very much

If you're hiding parameters from the user i.e. preventing user input, then you must make sure that you provide default values for your parameters within the RDL definition.

BTW, why would you want "prompt the user" set to true and then hide the parameters?