how can i check a date-prompt status (if its activated or not)

[jokerfm4]

hi to all cognos users,

i am working in cognos8 report studio. i m trying to filter with a date prompt. my goal is to choose a date in a date prompt which will filter my report and if no date is chosen a specified date (for example a users company joining date which can be different for each user)will be used.

its no problem to insert a date prompt and the filter works great... but how can i manage it to tell the filter if the prompt is not activated it should choose the employees company joining date?


my problem is the following: is it possible to check if a date prompt is active or not...
like:

IF ?dateprompt? is active
THEN...// use the chosen date
ELSE...// use the company joining date of each employee

please can anyone help

thanks a lot
joker