Cast to actor blueprint instance in level

I have several actors, which are instances of a blueprint. In the blueprint, I have a custom event called Raise_Gate

In another blueprint, if certain conditions are met, then I would like to call the Raise_Gate event on a specific instance, but I can’t figure out how to target the instance from the level.

Gate BP with Custom Event:

MyGame_BP set wanting to call Custom Event in particular instace of above BP: