Roi,

Yes, you can use asserts exactly like that. In my case it's not really as much a "design time" error as it is a safety valve.

>Right, I thought asserts in that case would be better. In your expample you could just:
>
>ASSERT RIGHT(This.MyValue, 1) == '\' ;
> MESSAGE 'Property MyValue must contain the trailing backslash'
>
>In the class init. Now it runs when you are developing and you can turn it off when you compile the finished app.
>
>Or am I misunderstanding how asserts are used?