lRagnaroxl 0 Posted April 23 Hey there! Im developing some HDA´s for my Bachelor Project! My actual Problem is about the Action Button for a Prim Group Selection. Right now im running the standart Action Button script below: import soputils kwargs['geometrytype'] = (hou.geometryType.Primitives,) kwargs['inputindex'] = 0 soputils.selectGroupParm(kwargs) But, of course it does refer to the Node above the Subnet. My question is: How can i refer to the Node above the Selction Node inside the Subnet ? Is it a Python Callback Script or is it something below the Action Button ? Thank you very much Max Share this post Link to post Share on other sites