Report date parameter widget - Error Code CE0597

Hi everyone, I want to use a report date parameter widget. But I get the error code CE0597 "Parameter not set".  How can I enter or read out parameters so that this error disappears? I would be grateful for a detailed answer, because I am a beginner.   Thank You!
1 answers

Your report has a dataset, which contains a parameter, which you have defined in the parameter list of the dataset window. At least that is what I assume. Something like this:

You probably have the parameter set. Can you add a screenshot of your Dataset-window? That might help us helping you to solve your error.