Character hand movement together with the camera

Hello!

I want to make a realistic flashlight in the character’s hand. Now the character holds the flashlight in his hand, pointing it in front of him.

When moving the mouse left and right - the whole character turns on the spot so that you can illuminate everything to the sides.

But you can’t direct the light up or down yet. If you look at your feet, the camera will go down and you will see the character’s legs and the hand holding the flashlight lighting up the area in front of you.

Could you please help me with making the hand with the flashlight move along the vertical axis?

That is, roughly speaking, I want to pass the rotation value from the camera to the lowerarm_r bone of the character.

This way, to light up to the sides, the character will turn from side to side with the whole body while to shine up and down, only his hand with the flashlight will move.

I am attaching a screenshot for a better understanding of how it looks now.

I would be grateful for any hints or suggestions.

Thank you in advance and good luck with your development!