I already gave you the answer, see message#1025805!

By the way, the message clearly says 'DynamicBackColor', not 'ynamicBackColor'!

>The spelling mistake was in the message, not in the program.
>any way, I discoverd that property 'DynamicBackColor' available only in the column, not in the text.
>my problems is:
>1. My question was how can I change one cell, not all the column.
>2. when I run this command

ThisForm.Grid1.Column2.DynamicBackColor=rgb(125,112,23)

I get a essage 'Data type is invalid for this property'.
>Help, please!