How to make a boolean variable a "target" input pin?

How to make a boolean variable a node with a “target” input pin?

What do you mean target?
If you want to set the bool on a different actor, you need a reference to like a cast node, and when you drag out from the cast “as whatever” search for that bool in that BP and you will get a target for the bool to reference that specific actor

for anyone still coming to this post make a boolean in the animation blueprint, then make a blueprint variable that references the animation blueprint in the original blueprint that your trying to add the bloolean to, get the blueprint variable drag of it then search the boolean you made in your blueprint animation. (if you don’t understand please reply)

Im a bit confused. Im trying to add a target pin to a bool to plug a “cast to” into.

Are you trying to set a boolean variable in the current blueprint you’re writing, or a boolean variable on some other object?

If it is the latter, how are you referencing the other object (another actor, for example)?