Incremental refresh, error need to set up parameters

Dear community, 

I'm trying to set up incremental refresh. I have a Pro license and am retrieving data from a SQL server using the import function. I made the new parameters, with RangeStart and RangeEnd, I applied the filter on the date column and chose close and apply. When I want to make my setting in that table regarding incremetal refresh I keep getting the message that I need to set up parameters so I can't go any further. In the options and setting I don't see a setting about incremental refresh so I figured that was automatically on in the recent version. Does anyone have an idea, what is going wrong here? Many thanks in advance!

Gr. DLU