Hi Noelia, ok, I understood your suggestion now :D With: self.mod = self.childCount/10+1 (+1 is mine, it not works otherwise) the computation is the same, but very much simpler. A stupid question, but I get lost often in stupid question. XD Thanks! Alberto ---------------------------------------------------------------- NVDA add-ons Central: A list for discussing NVDA add-ons To post a message, send an email to nvda-addons@xxxxxxxxxxxxx. To unsubscribe, send an email with the subject line of "unsubscribe" (without quotes) to nvda-addons-request@xxxxxxxxxxxxx. If you have questions for list moderators, please send a message to nvda-addons-moderators@xxxxxxxxxxxxx. Community addons can be found here: http://addons.nvda-project.org