Some way of knowing if a thread is sticky in SHOWTHREAD>

[BirdOPrey5]

I see $show['sticky'] is used in threadbit but when I use it in the SHOWTHREAD template it's always false, even if the thread is in fact a sticky.

What I really need is to use it in the showthread_start hook in a plugin... Any way of letting me use it in there or an alternate way to know if I'm in a sticky?

Thanks.