Thanks for your answer .
I have several Arguments (parameters) in my Layout Pcell .
Mos_Type string "mos" (or "mos_hvt")
Mos_Length float 1.0
And I would like to make Not Editable Mos_Length when Mos_Type == "mos_hvt" fro example .
So I search for CDF syntax .
Best Regards ,