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I like using foreach to step thought a selection set or if you need the vla-object (foreach ent (vl-remove-if 'listp (mapcar 'cadr (ssnamex SS))) ) (foreach obj (mapcar 'vlax-ename->vla-object (vl-remove-if 'listp (mapcar 'cadr (ssnamex ss)))) )

Another very useful is "Entmake functions.lsp", it has various entmake functions in it. Maybe make a word doc etc of your functions describing what they do. We had a "how to directory" with lots of help files. Was thinking about doing macros in Notepad++ run ents, run ss, ssl for layer, ssi for insert and so on. This is a common one. (repeat (setq x (sslength ss)) (setq obj (vlax-ename->vla-object (ssname ss (setq x (- x 1))))) ) Posted this before. Lisp files Apr 2024.docx

You’re welcome Tom. I forgot to say that if you are unable to install the 2021.1 update, then second choice is to set the AutoCAD system variable LISPSYS to zero and restart AutoCAD. The caveat is AutoCAD will then use the old VLAIDE rather than new Visual Studio. Steve Doman