How to call a method with input parameters from script B to script A (script A attached to a Object but B just used to store methods)

Actual problem -- > i have created "AI Behavior" script (Script B). In this script i have created bool method "IsDetected" using Raycast and Ray with a array and foreach loop and on calling this method to Player script (Script A) i am getting return value = "True" on firsst cycle but on second cycle it sending false because of there is null for hit.collider.transform.tag = "Player".

here id code : In Script A we ll just only call this method. Player script B :

public bool IsDetectedTarget(GameObject _rayEmitter, float _scanRange, string _targetTagName) {

     Ray[] rayforSearch = new Ray[1];
     Vector3 noAngle = _rayEmitter.transform.forward;
     Debug.DrawLine(_rayEmitter.transform.position, _rayEmitter.transform.position + noAngle * _scanRange);

     rayforSearch[0] = new Ray(_rayEmitter.transform.position, noAngle);

     foreach (Ray ray in rayforSearch)
     {
         RaycastHit hit;        

         if (Physics.Raycast(ray, out hit, _scanRange))
         {
             if (hit.collider.transform.tag =_targetTagName) { return true; }
         }
     }
     return false;
 }