How to Translate Object to Mouse Click Point in Game-World Coordinates

Hey everyone,
I swear I have gone through every link, forum, and tutorial on how to get this to work, yet nothing works. Thank you for taking the time to read this, my first post - my frustration is killing me. As simple as people are saying this is, I beg you not to merely link me to another example, I’ve seen at least 10 and I’ve spent 2.5 hours on it.

Goal: I want a cube (call it A) to translate from its current point to a mouseclick point. Since I read that in space a mouse point would be ambiguous, I created a second object (call it B) to click on, for reference.

What I Tried: As seen below, I tried using answers from forums. To see what coordinates were being returned when I clicked on B, I added a debug lines marked below - yet no matter where I clicked the coords returned were always the same.

What Actually Happens: Cube A moves in a completely unexpected direction, no where near the click area

Possible Reasons for Not Working:

  1. hitPos is always the same value regardless of where I click
  2. hitPos returns (-0.9, 3.7) on cube B positioned at (2.7, 0) - doesn’t make sense
   function OnMouseDown ()
    {
    
          var hit : RaycastHit;
	  var hitPos : Vector3 = Camera.main.ScreenToWorldPoint(hit.point);
          var theCube = GameObject.Find("Cube");
          var startPos : Vector3 = theCube.transform.position;
	  var endPos : Vector3 = hitPos;
          var ray : Ray = Camera.main.ScreenPointToRay (Input.mousePosition);
   
    
    if (Physics.Raycast (ray, hit))
    {
    
	var index =0.0;
	var rate = 0.2;
                                 //debug commands to print off coordinate values
	Debug.Log(startPos);
	Debug.Log(endPos);
	Debug.Log("Impact at: "+hitPos);
	
while( index < 1.0 )
{
      theCube.transform.position = Vector3.Lerp( startPos, endPos, index );
      Debug.DrawRay(startPos, endPos, Color.red);  //goes nowhere near click area
      index += rate * Time.deltaTime;
       Debug.Log(theCube.transform.position);  //another debug to track Cube A's coords
   if (startPos == endPos){    //I realize this if statement is probably pointless
        Debug.Log("Done!");
        break;
        }
    yield;
}
    
    }

    }

So you want the object to move to mouse.

//attach this to your camera
static var mousepos : Vector3;
function Update () 
{
	var ray = Camera.main.ScreenPointToRay (Input.mousePosition);
	var hit : RaycastHit;
	if (Physics.Raycast (ray, hit,1000))
	{
		mousepos = hit.point;
	}
}

//attach this to your object
 if (Input.GetMouseButtonDown (0)){
    transform.position = mouse.mousepos;
    }

This is a basic example. Hope it helps.