i need help in threading programation in unity 3d

im making a game with threads but my problem is that i can't realise it; this is my script

using System.Threading; using UnityEngine; using System.Collections; using UnityEngine.UI; using UnityEngine.EventSystems; using System.Collections.Generic;

public class TwoOnOne : MonoBehaviour {

 private Thread Pol ;
 private Thread Net ;
 private bool isrunningP ;
 private bool isrunningN ;
 private bool rntPause;
 private bool rplPause ;
 private bool rntCPause;
 private bool rplCPause ;
 public Animator AnimP;
 public Animator AnimN;
 public Transform RP;
 public Transform RN;
 public float fuellP;
 public float fuellN;
 public float MaxSpeed;
 private float Max_Y_Up;
 private float Max_Y_Down;
 private float Max_X_Left;
 private float Max_X_Right;
 private Vector3 VRN;
 private Vector3 VRP;
   
 void Start()
 {
     VRN = RN.localPosition;
     VRP = RP.localPosition;
     
     Max_Y_Up = 2.8f;
     Max_Y_Down = -17.0f;
     Max_X_Left =  -37.0f;
     Max_X_Right =  32.0f;
     
     isrunningP = false;
     isrunningN = false;
 
     rntPause = false;
     rplPause = false;
     
     rntCPause = false;
     rplCPause = false;
     
     Pol = new Thread(MoveRight);  
     Net = new Thread(MoveDown);
 }
 
 void Update()
 {
     RN.localPosition = VRN;
     RP.localPosition = VRP;
 }
 
 void OnGUI()
 {
     if(GUI.Button(new Rect(50, 50, 100, 50), "Pol"))
     {
        if(!Pol.IsAlive)
         {
             isrunningP = true;
                   Pol.Start();
         }
         else
         {
             Pol.Abort();
             isrunningP = false;
            rplPause = !rplPause;
         }
     

    }
    
   
     if(GUI.Button(new Rect(50, 120, 100, 50), "Net"))
     {
           rntCPause = true;
         if(!Net.IsAlive)
         {
             isrunningN = true;
     
             Net.Start();
         }
         else
         {
             isrunningN = false;
             rntPause = !rntPause;
         
         }    
     }
 }
   
 
 public void MoveRight()
 {
     while(isrunningP){
     Vector3 thePos = VRP;
         thePos.x += MaxSpeed;
             fuellP -= 2;
                 if(thePos.x > Max_X_Right)
                     thePos.x = Max_X_Right; 
                 else
                      VRP = thePos;
         AnimP.SetBool("Right",true);
         while(rplPause){}
     }
     
 }
 
 

public void MoveDown(){

     while(isrunningN){
         Vector3 thePos =  VRN;
             thePos.y -= MaxSpeed;
                 fuellN -= 2;
                     if(thePos.y < Max_Y_Down)
                         thePos.y = Max_Y_Down; 
                     else
                  VRN = thePos;
             AnimN.SetBool("Down",true);    
             while(rntPause){}
             }            
                 
 }            
 
 void OnApplicationQuit()
 {
     isrunningP = false;
     isrunningN = false;
     Pol.Abort();
     Net.Abort();
 }

 void OnDestroy()
 {
     isrunningP = false;
     isrunningN = false;
     Pol.Abort();
     Net.Abort();
 }

}

i wanna make a game that if i press a button i will Start the first Thread and if press the second button i will stop the current thread (will wait ) and i will start the second thread. plus if repressed the first button i will notify the first thread and it's also the same for the seconde button please i need help thank you