Dinamic matrix columns hiding

edited 1:39PM in FastReport .NET
Hello everybody.

I use matrix. My question is:

How to hide columns with values according to the value of grouping column? I can hide a column before the matrix has been started to be filled, I can change a cell value during data filling, but I cannot change size or hide a column during data filling. Has anybody dealt with this problem? Here is the picture of Matrix.

Thank you.

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