help with raycast

Ok I am having a problem I do not know if it is in my raycast or in my move unite code can any one help me.
The parts that work are, I can click on my unit and have it be selected that is np. But when I click to move the unit it will not move I do not know what I did wrong I am not getting any errors. This is my code. ps this is not for a game I am gust trying to get a RTS mover to work I got the A* pro(free) and I got that to work I am trying to get the ray cast to work and move a target around so I can have a target for the A* that moves with a click. but first I want to figer this out how to just move the unite to a point using raycast.

using UnityEngine;
using System.Collections;

public class UnitSelectUnit : MonoBehaviour
{
	//UnitSelect prerec
	
	public bool selected = false;
	private bool selectedByClick = false;
	private Vector3 moveToDest = Vector3.zero;
	public float floorOffset = 1;
	public float speed = 5;
	public float stopDistanceOffset = 0.5f;
	
	
		
	//UniteSelecting code
	
	private void Update () 
	{
		if (Input.GetMouseButton(0))
		{
			if(!selectedByClick)
			{
				Vector3 camPos = Camera.mainCamera.WorldToScreenPoint(transform.position);
				camPos.y = UnitSelectCamera.InvertMouseY(camPos.y);
				selected = UnitSelectCamera.selection.Contains(camPos);
			}
			
			if (selected)
				{
					
				}
			else
				{
					
				}
			if(selected  Input.GetMouseButtonUp(1))
			{
				Vector3	destination = UnitSelectCamera.GetDestination();
			
				if (destination != Vector3.zero)
				{
					//if you have unity pro us
					// gameObject.GetComponent<NavMeshAgent>().SetDestination(destination);
				
					//if you do not have unity pro us
					moveToDest = destination;
					moveToDest.y += floorOffset;
										
				}
			}
		}
		UpdateMove();
	}
	
	private void UpdateMove()
	{
		if ( moveToDest != Vector3.zero  transform.position != moveToDest)
		{
			Vector3	direction = (moveToDest - transform.position).normalized;
			direction.y = 0;
			transform.rigidbody.velocity = direction * speed;
		
			if (Vector3.Distance(transform.position, moveToDest) < stopDistanceOffset)
				moveToDest = Vector3.zero;
		}
		else
		{
			if(rigidbody)
			transform.rigidbody.velocity = Vector3.zero;
		} 
	}
	
	private void OnMouseDown()
	{
		selectedByClick = true;
		selected = true;
		
	}
	private void OnMouseUp()
	{
		if (selectedByClick)
			selected = true;
		
		selectedByClick = false;
	}
}
using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class UnitSelectCamera : MonoBehaviour 
{
	public GUIStyle MouseDrageSkin;
	
	
	public static Rect selection = new Rect(0,0,0,0);
	private Vector3 startClick = -Vector3.one;
	
	private static Vector3 moveToDestination = Vector3.zero;
	private static List<string> passables = new List<string>() {"Floor"};
	
		
	void Update () 
	{
		CheckCamera();
		Cleanup();
	}
	
	private void CheckCamera()
	{
		if (Input.GetMouseButtonDown(0))
		{
			startClick = Input.mousePosition;
		}
		
		else if (Input.GetMouseButtonUp(0))
			startClick = -Vector3.one;
		
		if (Input.GetMouseButton(0))
			selection = new Rect(startClick.x, InvertMouseY(startClick.y), Input.mousePosition.x - startClick.x, InvertMouseY(Input.mousePosition.y) - InvertMouseY(startClick.y));
			
			if(selection.width <0)
			{
			
				selection.x += selection.width;
				selection.width = - selection.width;
			}
			if(selection.height <0)
			{
				selection.y += selection.height;
				selection.height = - selection.height;
			}
	
	}
	

	private void OnGUI()
	{
		if (startClick != -Vector3.one)
		{
			GUI.Box (selection,"",MouseDrageSkin);
		}
	}

	public static float InvertMouseY(float y)
	{
		return Screen.height - y;	
	}
	
	private void Cleanup()
	{
		if (!Input.GetMouseButtonUp(1))
			moveToDestination = Vector3.zero;
		
	}
	
	public static Vector3 GetDestination()
	{
		if(moveToDestination == Vector3.zero)
		{
			RaycastHit hit;
			Ray r = Camera.mainCamera.ScreenPointToRay(Input.mousePosition);
			
			if (Physics.Raycast(r, out hit))
			{
				while (!passables.Contains(hit.transform.gameObject.name))
				{
					if (!Physics.Raycast(hit.point + r.direction * 0.1f, r.direction, out hit))
						break;
				}
			
			}
			if(hit.transform != null)
				moveToDestination = hit.point;
		}
		return moveToDestination;
	}
}

sorry about that code not being in a code tag and ty for the link to the page for the help

Please use code tags. See this tutorial.

I changed it ty for the link