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<HomeBoyLV>Is it possible to create a database resident
system variable? My desire is to create a system variable that I can use to
expose results of my program, and/or let the user set values that the program
can use. I thought I saw an example somewhere, but I can't seem to find it
now. Any Ideas? Thanks HomeBoy Out
Very old post, but from AutoCAD 2011 onwards it is possible to create a custom system variable by adding a key to the registry.
Your user might need elevated UAC permissions to be able to add it to the registry's local-machine hive, but this can be achieved by your installer.
There's more information contained at the bottom of the following through-the-interface post for those who are interested Custom System Variable Link