Ah! Ok, what you're describing is how Region Automation was implemented and displayed in the earliest version(s) of LPX (10.0.0)—what version are you running? I can't remember exactly in which version it was changed to what you see in my original screenshot—maybe 10.1? (My screenshot was taken in 10.4.7—actually the most current version is 10.4.8 which adds additional under-the-hood improvements for Catalina).
That said, I'm not sure why pitchbend might be greyed out for you—AFAIR it should work the same way, more or less, despite the different nomenclature (though there were lots of bugs in some of the earliest version(s) of LPX). Obviously I can't duplicate your setup exactly with the newer version of Logic—is there a reason you haven't updated (older macOS, maybe)? The video below is from an older course that dates back to what I think must be LPX 10.0.0—take a look at around 01:43, I assume that's what you're seeing..
(Quote) i wish i knew how to post screenshots on here so that you could get a better look (unquote)
Unfortunately at this time only admins and the Forum moderator (me) can attach screenshots..