How to SetTrigger all colliders with a specific name

 var FloorArray : GameObject[];//Declare an array, to be filled later
 FloorArray = GameObject.FindGameObjectsWithTag("Floor");//fill the array
 
 function SetFloorTrigger()
 {
     for(var CurrentFloor : GameObject in FloorArray)//iterate through the contents of your array, "CurrentFloor" is a temporary name that references each GameObject inside the Array
     {
         CurrentFloor.collider.isTrigger = true;
     }
 }