I have a check box whose checked property I'm trying to set to true, but it just won't set. Even if I litterally say oCheck.Checked = True, it remains False. I'm using a user data source of short text with one character just as I do in a previous add-on. The previous add-on works but second one doesn't. In order to get the second add-on to work, I had to use the ValOn and ValOff properties. Would there be any reason for this? I'd like to understand what is going on.