Apply [None] master to Masters pages

Scripting Forums AppleScript | Mac OS X
#1

I don’t understand why I can’t apply [None] master to a group of Master pages

tell application "Adobe InDesign CS4"
	tell document 1
		set the applied master of page 1 of spread 1 to "[None]"		
	end tell
end tell
#2

Trial and error:

I ran this script

tell application "Adobe InDesign CS4"
	tell document 1
		set the applied master of page 1 of spread 1 to missing value
	end tell
end tell

and got an error : “master spread or nothing expected”, so probably nothing is the proper value