Aim Offset wont look up or down

I’ve been attempting to make a third person shooter. I’ve been following aim offset tutorials, but for the life of me I cannot get it to work. My character will not look up or down while I aim. I can make them aim, I can set up everything with my own animations and all that, but it simply will not look up or down, even though that’s all I’m trying to get it to do.

My Bp goes as follows: Character can idle/walk, then idle/walk with a blend so they hold their rifle while doing so, then if aiming they then use the aim offset.