I am trying to validate a combo box when a user clicks a link on a view panel to open another xpage.  

 

Current Xpage: 

The xpage has two combo boxes and a view panel on it.  I want to make sure that the user selects values in the combo boxes before they can open the document from the view panel. The combo box values are added to an application scope variables that is used on the other document.  Without that information being set it causes a problem when the other document submits values to a web service.

 

I have tried several methods to get the validation to fire but have had no luck.   I'm new to xpage development.  This is probably something fairly easy to accomplish but sure how to proceed.

 

Thanks for any help..