InsertCol into ADVColumnGrid

I import data from an excel file  throughout ADVGridExcelImport componant into ADVColumnGrid: perfect

Afterwards I want to insert columns using the InsertCol(position, number) function but I receive this exception message : EArgumentOutOfRangeException.
Howerver, I can correct that when before the InsertCol function, I create column in that way :
FOR I := 0 TO G_Exemple.ColCount - 1 DO
         END; //  Fin de FOR

Is it a normal situation ?

Do you use the latest version as I retested this here and could not see an issue.

If a problem persists with the latest version, please send us by email a sample source project with which we can reproduce this here.

Ok I send a project

We have received it and will investigate it.