I have a checkbox on one of my modeless forms that when clicked (checked or unchecked) switches out some images and does some other simple stuff according to its "checked" value. I'd like to be able to click something else on my userform, say a button, and have it check the checkbox (CheckBox1.Checked = True) and then all the "stuff" gets changed as if I physically checked the checkbox myself on the form. How can I do this? apparently it's not as easy as just putting the above code in the button click event. I get an error everytime I click the button and nothing happens, including the checkbox changing.