Remove Transmission Dipstick Tube?

I am removing my transmission in order to inspect the rear core(freeze) plugs as I suspect that one is leaking? I have disconnected everything except the Transmission Dipstick Tube? How is that connected? There doesn't seem to be any bolts or clips holding it down. except a support up higher near the top of the bell housing/motor. How do I pull it out of the tranny case?:runaround:

There should be a bolt that attaches it to either the head or the block.

Bryan