Key-In Issue With Level Overrides

Hi,

So i have been playing around with Key-In's, I am attempting to make a batch process key-in script that sets all level overrides so it doesn't have to manually be done.

I have successfully done this in the past - but for some reason I'm having a problem getting the key-ins to work;

Here is an example key-in;

level set override color <'3' [file:*.*->*.*] 'Cable_Duct'>

This should set all nested levels on 'Cable_Duct' to color 3, however i get an error of cannot find level, can anyone point out where im going wrong?

Cheers

Callum