I suppose you are talking about custom property manager page. If so, you can call the SldWorks::RunMacro2 method from within the PropertyManagerPage2Handler9::AfterClose handler of your Property Manager Page Handler class if the reason = swPropertyManagerPageClose_Okay in the previously fired PropertyManagerPage2Handler9::OnClose.
Artem Taturevych, Application Engineer at Intercad (Australia)
translationXpert – add-in to translate SolidWorks models
myIntercad – an integrated tool for SolidWorks Professionals
I think he means the "Property Tab Builder". If so, the answer is "no". The most you can do is to link a drop down list to a table in an Access Database.