Hi all, How (via code) can I change the color/name values of an existing ROI? If the ROI has to be redefined and created, how can I get the xpts/ypts for the existing ROI? After talking to tech support, the answer is 'you can't'. The current option is to create a new roi with the colors/names redefined. Unfortunately, the xpts/ypts for polygons are unrecoverable so, the simplest option is to create the new roi as a set of all points in the original roi. Jim