IF OR = COND

[cadking2k5683822]

I want autolisp to check and see if MS is = to any of these what is wrong I have used (cond (or it just will not run the progn

(IF
(= MS "M26" "M42" "M45" "M48" "M52" "M56" "M60" "M64" "M68")
(PROGN

[rkmcswain]

(if (member ms (list "M26" "M42" "M45" "M48" "M52" "M56" "M60" "M64" "M68"))
(progn
..................