Create objects in a selected area

I have written code for a loop to create objects in a select area based off mouse position A and Mouse position B. but the problem i have come across is that it only works is if point1 is to the right of and lower to point2, How can write this correctly?

var point1 : Vector3;

var point2 : Vector3;

var z : float;

var ray : Ray; //Camera.main.ScreenPointToRay(Input.mousePosition);

 if (Input.GetMouseButtonDown(0) && box2)
      { 
          point1= ray.origin + (ray.direction*distanc);
          point1.y =  hieghtFloor;
           point1.z = Mathf.RoundToInt(point1.z);
           z = point1.z;
           point1.x = Mathf.RoundToInt(point1.x);
           pointStr1 = point1.x+","+ point1.y+"1,"+point1.z;
           Debug.Log("Point "+pointStr1);
 
       }
       if (Input.GetMouseButtonUp(0)&& box2)
           {
               point2= ray.origin + (ray.direction*distanc);
               point2.y =  hieghtFloor;
               point2.z = Mathf.RoundToInt(point2.z); 
               point2.x = Mathf.RoundToInt(point2.x);     
               pointStr2 = point2.x+","+ point2.y+","+point2.z;
               var currentz : int = point2.z- point1.z;
               var currentx : int = point2.x-point1.x;
               var maxInt : int = currentz*currentx;
             
             if(maxInt > 0)
             {
                 for(var i = 0;i <= currentx; i++)
                 {
                     for(var t = 0 ;t <= currentz; t++)
                     {
                         if(!GameObject.Find(pointStr1) && !GameObject.Find(pointStr2))
                         {
                              currentObj=GameObject.Instantiate (startCube,point1, Quaternion.identity);
                              pointStr1 = point1.x+","+ point1.y+"1,"+point1.z;
                              currentObj.name = point1.x+","+ point1.y+"1,"+point1.z;;
                              
                         }
                         point1.z++;
                         pointStr1 = point1.x+","+ point1.y+"1,"+point1.z;
             
                     }
                     
                     point1.x++;
                     point1.z = z;
                     pointStr1 = point1.x+","+ point1.y+"1,"+point1.z;
                 }
             }