>Michael,
>If you based your classes in "relation" you need to change them to "custom".
>"relation" and some other non-visual classes can't be used in VCXs, as far as I know.

Yes, I found that just after I posted the message. I've been used to use Relation as this is the smallest class. But, when using visual class, we can't. So, I use custom. Is this the smallest one for visual designer?