>Thanks Jaime
>
>
>But don´t work in way i want .
>
>Now , happen this :
>first , color change , after i see MessageBox .
>
>i want this :
>first i see MessageBox , after color change if i make yes .

Just a speculation, but how about in Click:

nodefault
your messagebox code
if Answer = 'Yes'
dodefault()
endif