Java Security

Hi,

I'm trying to disable a menu item if the user is a proxy in OSC. In the EL Builder for the Menu Item, I am using this:

#{!fndGlobal.isImpersonating()} or #{!securityContext.isImpersonating}

When I validate, it is good. However, when I publish and login as a Proxy, the menu item is still enabled.

Is there another object/property that returns or determines if the user is a proxy?

Thanks!

Arnold