SSCE Dashboard assigning parameters

Hi,

I want to assign some Input Parameters from my SSCE Dashboard via Url to my Query in MII. I have created a Paramter in DESIGN DASHBOARD Preferences with Type: String and Context: QueryParams, but if I try to assign this Parameter in Configure Query Parameters to Param.1 then I do not see it in the corresponding "Input Parameter" dropdown box. Has someone Information about that?

Thanks!

Kind regards

Andreas