I hope I'm explaining this correctly. Is there a way to immediately update a user form as the user answer's the form. i.e. Lets say the user form has two text boxes, four radio buttons (marked with labels + - * /) and a label used for the answer. After the user enters a number in textbox1 as soon as they start to type a number in textbox2, depending on which mathematical operation they chose, the label(answer) would change as soon as they type a digit. Hope that makes sense. Thanks for your help.