We put a button on a form. But based on the value of a variable this button should be disabled.
Is this possible, and if so how?
We use Baan IVc4.

Thanks in advance.

Are you talking about greying it out? If not why not in the on.choice section just pop up a message that says "Disabled because......".

U can use the function

disable.commands("config.product.button")
where config.product.button is the form command linked to the button.