how to control visibility txt parameter in vlisp?

[Anonymous]

Hi,  how can i do to  turn only the underlined invisible ?

here is the code 

         (command "_bedit" "area")
                    (setvar "attmode" 2)
                    (command "erase" "all" "")
                    (command "_attdef" "a"  "" "nome" "nome" nome  "j" "mc"  "0,7"  12.5 0)
                    (command "_attdef" "a"  "" "area" "area" val  "j" "mc"  "0,-7" 7.5 0)
                    (command "_attdef" "a"  "" "area" "area" per  "j" "mc"  "0,-20" 7.5 0)
                    (command "_bsave")
                    (command "_bclose")

thanks

[Shneuph]

You may just need to put an "I" which toggles invisibility parameter: Like

(command "_attdef" "I" "a"  "" "area" "area" per  "j" "mc"  "0,-20" 7.5 0)

[Anonymous]

thanks for answer but it's not working since i put the  system variable  "attmode" as 2, otherwise i cant be sure if it's gonna be invisible or visible  and the parameter "I" just change it for yes or no, without any control.

[Shneuph · Accepted solution]

I believe you must have vl loaded.  (vl-load-com)

(command "_bedit" "area")
                    (setvar "attmode" 2)
                    (command "erase" "all" "")
                    (command "_attdef" "a"  "" "nome" "nome" nome  "j" "mc"  "0,7"  12.5 0)
                    (command "_attdef" "a"  "" "area" "area" val  "j" "mc"  "0,-7" 7.5 0)
                    (command "_attdef" "a"  "" "area" "area" per  "j" "mc"  "0,-20" 7.5 0)
                    (vla-put-invisible (vlax-ename->vla-object (entlast)) -1)
                    (command "_bsave")
                    (command "_bclose")