Platform moves when character steps on it

I have a moving platform script which i have gained from doing a tutorial online and works fine but i would like it to move when the character touches the platform.

MovingPlatform Script:

 #pragma strict
  var Xpos : float;
  var Ypos : float;
  var max : boolean;
 
 var Vert : boolean;
 var maxAmount : float;
 var step : float;
 function Start () {
 Xpos = transform.position.x;
 Ypos = transform.position.y;
 max = false;
 }
 function Update () {
 //SET THE MAX
 
 if(transform.position.y > Ypos + maxAmount){
 max = true;
 } 
 if(transform.position.y < Ypos){
 max = false;
 }
 if(transform.position.x > Xpos + maxAmount){
 max = true;
 } 
 if(transform.position.x < Xpos){
 max = false;
 }
 
 //MOVING THE PLATFORM
 
 if (Vert){
 if(!max){
 transform.position.y += step;
 } else {
 transform.position.y -= step;
 }
 }

This is the trigger script:

//attach this script to your trigger

var Player : GameObject; //(First Person Controller as that is where the collider is) var Script : MonoScript; //(PlatformMover)

function OnTriggerEnter(other : Collider) //Check if something has entered the trigger ( and declares this object in "other" ) { if(other.collider.tag == Collider) //Checks if the Player is inside the trigger { Script = GetComponent(MonoScript); Script.enabled = true; //enables PlatformMover. }

This has been killing me for last week and unsure how to go about it. I know it will be a true or false but unsure on the scripting reference for character within the script.