Character wont stay aiming

So i have an aiming animation and made it a bool in the animator. I have the bool being set to true when "Fire2" is pressed. But my character does the animation and then puts the gun back at the idle position. PLEASE HELP! TY

My script:

private void Update(){ // Animations

         bool aim = (Input.GetButton("Fire2"));
         bool WalkorRun = (Input.GetKey(KeyCode.LeftShift));


       
       
         anim.SetBool("Run", WalkorRun);
         anim.SetBool("Aim", aim);

}

The Animator Setup(The state to the top left is the aim state and animation):