>We know that:
>thisform.grid1.column1.backcolor = 0
>
>changes the color property in column1 of the grid;
>
>but if we have 100 cols
>
>n = 100
>m = 0
>for i = 1 to n
> m = m + 1
> **THE PROBLEM:(these two didn't work)
> *thisform.grid1.column(m).backcolor = 0
> *thisform.grid1.column&m.backcolor = 0
>endfor
>
>how can it be done?
>
>Thanks
>
>Gil

Firstly, check the syntax: it should be Thisform.Grid1.Columns.backcolor
Also, it's much nicer to use Grid1.SetAll.
Also, it's good idea to Grid1.Refresh.