How do I read and flip a Boolean variable attached to another blueprint?

I am working in version 7. I have created a “Wall” actor and blueprint, attached a Boolean variable “Up?” (ie. it is not listed as a Component, it is listed as a Variable/Component under My Blueprint) and clicked the “eye” icon as open. When I spawn walls, the SpawnActor function exposes the Up? Variable and allows me to specify that certain walls will be True for “Up?” My script on the Wall blueprint, raises the Walls (out of the ground) designated as “True” for “Up?” I then store all Walls {both Up and Not Up) in an array of actors. Now I need to raise and lower walls from another blueprint by merely changing the Boolean value for Up? in specified Walls (the Wall blueprint in the particular Wall will do the rest) . When I “Get” a spawned Wall from the array of Walls, I cannot find a way to access the Boolean variable that is a part of that particular Wall. Please help and please be specific.

I solved my own problem. I “Get” the specified Wall from the array of Walls, “Cast To” it’s blueprint, the “As” output on the “Cast To” gives me access to the variable “Up?” for the particular Wall segment, and I “Set” the boolean variable to True for Up or False for Down. This is an easy solution so I doubt there is anything easier for spawned actors.