Thanks very much Fabio,

aControl[1].WriteExpression("BackColor1","")

WriteExpression made it work perfectly!

I'm getting very excited with creating those scripts.
Do you know if it's possible to put a ComboBox instead of the native TextBox for a property that I added to an object?

My goal is to obtain the same effect that we have for example in Form.BorderSize, when VFP opens a Combo containing: 0-No Border 1-Fixed Single 2-Fixed Dialog 3-Resizable.

Or should I create a simple form with a kind of builder for that?

TIA

Grazie Tanto !

Cesar