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I am currently working on a drawing using Auto Cad 2015. Am unable to select objects on the Defpoints Layer, Was able to do this previously with this particular file. Also am able to select objects on this particular layer in other files. Is there a variable or something else that can be done to address this problem.

Hi All, I'm Autolisp beginer and first problem which I would like to solve with it is how to restore layers Visibility after Layiso command. In few steps it's looks like: 1. Before use Layiso command I'have some layers that are on others are off. 2. I'm using Layiso and makes some changes on drawning. 3. After changing I want to restor layers visibility from point 1 (before Laiso command). My idea is to use LayerState functions: layerstate-save, layerstate-delete and layerstate-restore. I have problem with using LayerState functions. I could name functions for example "Iso" and "RestoreState". LayerState name could be "XX" Program structure: Step 1 - c:Iso I'm checking if "XX" exist. If "XX" exist then using layerstate-delete I'm deleting "XX". I'm creating LayerState "XX" using layerstate-save. Step 2 (command "Layiso") Step 3 I'm doing some changes in drawing. Step 4 - c:RestoreState I'm restoring "XX" using layerstate-restore. My problem is that I don't know how to use LayerState functions. Many info I've found here: http://www.cadtutor.net/forum/showthread.php?39986-LayerState-Manipulation-Info.-Coding but still don't know how to for example make Layerstate "XX" using it. or don't work. How it should look like? Also I've tried to use only commands: This code don't has checking if "XX" exist but works. How to write code using LayerState functions?? Anyone can help? Sorry for my English