Waiting for command to finish in AutoLISP

[326047736]

Hello everyone.

I'm trying to wait for the boundary command to finish in AutoLISP. So I tried the code below:

(command "_.-boundary")
(while (> (getvar 'cmdactive) 0) (command pause))
(command "move" (entlast))

But I mysteriously can't select all the options of the command:

So I changed a little bit of the code:

(command "_.-boundary")
(while (= (getvar "CMDNAMES") "boundary") (command pause))
(print "Hello!")

AutoLISP didn't "wait" for the command to finish and printed "Hello!" on the console directly:

What should I have a try next?

Any reply might be helpful. Thanks!

[ВeekeeCZ · Accepted solution]

Your comparison fails. See HERE 

It seems that 'cmdactive method works fine for me.

You can also try (command-s "-boundary") method if you have acad 2016+

[326047736]

Thanks a lot! @ВeekeeCZ 

Command-s works great (on AutoCAD 2020) and I should really check the comparison result first.😅