Hi, I am using MaxScript 5.1. I registered a function called Callback_Pre_Delete() using this code: callbacks.addScript #selectedNodesPreDelete "Callback_Pre_Delete()" This function is now called before the deletion of the selected scene objects. 1. Is there a way for this callback function to abort the deletion of these objects? 2. If not then is there a way to make certain objects un-delete-able from MaxScript? Thanks, Neil

I'll move this to Visual Arts where people are more likely to have an answer for you.