FMXGrid Summaries on Android

Hello

I followed the instructions and I can't make it work the "summaries" on Android, it won't show anything.

Can you please share me the code in order to do that please?

I have a FMX Grid with 12 Cols, I want to summary 2 of them

Thanks

  TMSFMXGrid1.BeginUpdate;
  TMSFMXGrid1.RandomFill;
  TMSFMXGrid1.RowCount := TMSFMXGrid1.RowCount + 1;
  TMSFMXGrid1.FixedFooterRows := 1;
  TMSFMXGrid1.ColumnCalculation[3] := ccCount;
  TMSFMXGrid1.EndUpdate;