Hello,

I don't think you can do this on the Report Definition itself. I guess you could try to create two different UI presenting the expected number of columns and jump from one to another with a WHEN condition maybe. 

Hi Deva, Could you explain more on your use-case? When you create a report definition you will be having columns already defined so I think you meant while presenting the columns (either with repeating grid or repeating dynamic layout) you want to mask few columns. Right?

Thanks,

Chithra.

You can have two reports, use them in the same section and then set the visibility of the Grid(of the second report) or the Dynamic Layout which contains a grid based on "When Condition".