How to get focal length of Active CineCamera for Movie Pipline Burn In?

Hello!

Could anybody help me, please?

I see that template of “Movie Pipline Burn In” (DefaultBurnIn) has text as “Focal Length: 50mm” but “DefaultBurnIn” blueprint hasn’t any camera parameters inside.

How to get focal length of Active CineCamera for Movie Pipline Burn In?
It’s very important parameter for render.