Adding MaxDistance to RayCast Stops Raycast From working

Hello,

When I add a "maxDistance" variable my raycast code stops working. I have looked at the other questions similar to this but I cannot find an answer as to why my code is behaving this way. I have tried using Mathf.Inifinity and it does not seem to be a problem of the rays length...

Thankyou for your time

     void FixedUpdate()
 {

     LayerMask mask =LayerMask.GetMask ("ArmR");
     //LayerMask.GetMask ("ArmR");
         //1<<11

     if (Input.GetKey (KeyCode.E)) {//check if the LMB is clicked
         RaycastHit hit;
         Ray ray = camera.ScreenPointToRay (new Vector3 (Input.mousePosition.x, Input.mousePosition.y,0));

         if (Physics.Raycast (ray, out hit, 25, mask)) { //check if the ray hit something (ray, out hit)&&
             hitPosition = hit.point; //use this position for what you want to do

             if (hit.collider.CompareTag ("ArmR")) {
                 UpArmR.transform.position = Blueman.transform.position + UpArmOffset;
                 LowArmR.transform.up = -hit.point + hit.transform.position;

                 Debug.DrawRay (hitPosition, hit.point, Color.cyan);


                 LowArmR.transform.localEulerAngles = new Vector3(0, 0, transform.localEulerAngles.z);
                 UpArmR.transform.localEulerAngles = new Vector3(0, 0, transform.localEulerAngles.z);


                 if (Input.GetKeyUp (KeyCode.E)) {//check if the LMB is clicked



                     UpArmR.transform.position = Blueman.transform.position + UpArmOffset;
                 }