Look at object when it is in the range of the player

hey guys,

I am looking for a C#script that helps me to make my player look at an object when it is in a specific range and hitting a button.

so basically should nearly every gameobject be the target but the player should look while he is hitting shift at the nearest one

i tried something like

 public Transform myCurrentTarget; // reference a target you want to aim/look at here.
 
    void AimLookIK () 
 
     {
             if(!myCurrentTarget) return;   
             Vector3 targetPos = myCurrentTarget.position;
 
             a.SetLookAtPosition (targetPos);
 
             a.SetLookAtWeight(1, 0.5f, 0.7f, 0.0f, 0.5f);
 
     }

but i think thats horribly wrong. would be nice if someone could help me out with that :)