Greasemonkey and GM_xmlhttpRequest

[digitalaudiorock]

I'm using greasemonkey for palemoon version 3.31.4. Should GM_xmlhttpRequest work in that version? Some things I read seem to imply that GM_xmlhttpRequest was added in greasemonkey 4, however looking at the source for 3.31.4 it appears to have code related to that. Any attempt I make to use that results in this error regardless of what grants I add:

Code: Select all

ReferenceError: GM_xmlhttpRequest is not defined

Has anyone been able to use that in that version? Thanks in advance.

Tom