Client Script g_form.setReadOnly() not working.

[JavaScriptMaest]

g_form.setReadOnly() method not working when I run it through Client Script, but it works when I run the same on the JavaScript Executor(Ctrl + Alt + Shift + J), is there a way to debug and know what is stopping my Client Script code to not work on setting the field read only. 

The Client Script is:

[JavaScriptMaest]

Nope, there are no mandatory fields.

[nataliya_b]

have you tried to add the line? 🙂

[JavaScriptMaest]

I have tried setting the mandatory fields to true and false, it works for setting mandatory but it does not work for setting read only.

[nataliya_b]

are those fields - variables in variable sets?

[JavaScriptMaest]

Nope, it is not a Catalog Client Script.