Unreal Engine Animation axis question

Hi i’m trying to make flight simulator using UE5 and the model of plane is from marketplace.
I need to make a movement of ‘Flaps’ which are located on the both wings.

As you can see on the picture the model of plane is all connected with bones and i can make a rotate of it. So i want my flap to be rotate downwards for 30 degrees to Z axis.

To do that
image

I made my airplane BP like this and if i press 1 button while playing the outcome is quite strange like this.

How can i fix it ? I want my flap to be look downwards.
Need help ASAP
Thanks a lot !