Yeah if it is just a function that just returns different values maybe (one sample only). But what if each form have similar properties but different values. Just like an automobile, similar brand but different colors. We are using a common toolbar publicly utilized by each active form. The toolbar buttons have different behaviour (enable/disable) depending on what form is active. I want to go back and forth in each active form, and the toolbar buttons should behave in accordance with what the form needs. How would you handle this?