Set bone rotation by name not working in play mode

Hi.
I created a simple blueprint actor with a couple of poseable mesh components. I created some variables and used Set Bone Rotation by Name in construction script to set some bones rotation. Everything works hunky-dory in the editor but when i hit play everything reverts back to it’s original state. And in play mode when i eject and select the actor and change the variables everything updates to what it should be.

can you tell me the hierarchy of your skeleton example:

https://image.noelshack.com/fichiers/2018/35/4/1535648958-bone.png

Yeah it’s a very simple setup with one root bone and 7 child bones directly under the root

I suggest trying to set the bone rotations in a BeginPlay event rather than a Constructor, or have both events run the same function which does the bone setting.