Good afternoon,



I have a ZPL macro which performs a couple of very quick calculations.  Ideally I'd like to have the macro update automatically when I edit the lens data, the way other windows do.  I don't care if it's in the text viewer, graphic viewer, or some as-yet-undiscovered ouptut. But at the moment I can't find any way to have my macro re-run on changes except by clicking the "Update" arrows on the Text Viewer window directly



I can see why Zemax might want to avoid this, as it could quickly create a never-ending loop if the macro itself makes any changes.  However: there is a tick box called "Update ZLP Windows" in the Visual Optimizer  that gives me some hope that this is possible.  However, checking/unchecking that box doesn't seem to have any impact, and I can't find any reference to it in the documentation.  Evidently it's a new option, as it's not shown the screen capture of the window in the help file.



Does anyone have any information on the intended behaviour/purpose of the "Update ZPL Windows" checkbox? Or does anyone know of any hooks I can put in my macro which will trigger it to update, either from a change of the visual optimizer or from a change in the lens data directly?



Evidently I can achieve this through a User Analysis ZOS-API, but that will take some extra time for me to understand.  If there's a quicker way to achieve it with ZPL, I'd love to know about it.



Thanks for your help.



Pete