I have an SSRS 2008 r2 dashboard application that I would like to reset parameter values back to null or spaces. I would like to be able to reset these values since users can click a back button to revert back to previous higher level ssrs 2008 report. Basically the user is presented with the 'main' report and then they can chose what path they would like to drill down into to obtain information. If the user clicks the back button several times, they can chose a 'different' path to purse information.
I would like to reset values since all the parameter values are not used for the 9 different paths the user can chose from.
Thus can you tell me how to reset these parameter values?