Topic: Invalid option keyword

[2e4lite]

      ...
      (setq ent (ssname ss n))
     ...
      (command "chprop" ent "" "la" lay_chname "")
 
   It runs successfully in cad2004,but in cad2009, prompting Invalid option keyword,why?

[Kerry]

Perhaps the command prompt sequence has changed ... if all other things are equal.

[2e4lite]

If I operate  step by step  in  the command line by this sequence,It is also successful

[Lee Mac]

Try:

Code: [Select]

(command "_.chprop" ent "" "_layer" lay_chname "")

[2e4lite]

Thanks Kerry and  Lee Mac !

[irneb]

      ...
      (setq ent (ssname ss n))
     ...
      (command "chprop" ent "" "la" lay_chname "")
 
   It runs successfully in cad2004,but in cad2009, prompting Invalid option keyword,why?

Try:

Code: [Select]

(command "_.chprop" ent "" "_layer" lay_chname "")

Moral of the story ... never use shortcuts for options when calling them from Lisp (use the full option's name). You can be nearly 100% sure something will change again if any new option is added in a later version, and the chance that that "something" is the shortcut is very high - while the name is much less probable.