Can you use What If Parameters to dynamically recalculate a calculated column? I need to allow the user to change dates that are being used to forecast out component values. I currently have a fixed future date in each row of data for each component that I am using to forecast the future value for that componet (value deterorates over time), but the customer wants to make changes to that date on the dashboard and then immediately see the revised forecast based on the slected future date. I tried using a What If Parameter to allow the user to add days to the date (Fixed Date + Parameter days = New Future Date) but it won't recalculate the new date. I also tried a Refresh thinking that the system would recalculate the column vales if I refreshed the data but that didn't work either. Can Parameters only be used to filter a table or with Measures?

It can be only used in measures not in columns. You can add a measure for you date calculation and use that.

Dynamic Calculated Columns using What If Parameter