I have a simple Silverlight OOB application. The app opens with three textboxes: First Name, Last Name, and Age. The Age textbox has a behavior associated with it. This behavior forces the user to enter a valid number. When I create a test using Test Studio, I record entry of a first name, last name and entry of an age into the form. However, when I play the test back, all the textboxes get the proper values entered except for the age textbox. If I remove the behavior from the Age textbox, then I can successfully play my test back and all the textboxes are populated correctly. Is there a way to run this test successfully when the Age textbox has a behavior attached? My Silverlight source code is attached.