[tobago] Validation in Popups

[Michael Kakuschky]

 Hello, I have a form in a popup. Now it works fine and I add some 
validators to it. I checked that they are executed and throws the 
ValidatorException if the input does not match the requirements.

In case of exceptions the action behind the popup form is not executed 
but unfortunately the popup is closed without any notification about the 
wrong input. Is there a way to keep the popup open so that the user is 
informed about the wrong input?

thanks &regards Michael