Hi, When my source code presenter content is edited I want to change the badge of a toolbar button. In the code bellow, the block is executed but the button badge does not change. You have to move the whole window to get the badge updated accordingly.     source whenTextChangedDo: [:txt |         saveBtn badge: '*'.         self update: saveBtnself]. What update mechanism am I missing? Is it observable slot things? Hilaire -- Dr. Geo http://drgeo.eu