Taking value of variable from a script of Gameobject to a script attached to other Gameobject

I am developing a game, actually I have done hundreds of lines of coding now I stuck in the simple problem. I have a script attached to an empty GameObject and this script is doing something like getting value of two variables dynamically from a script attached to another GameObject in order to switch from Player 1 to Player 2. Actually it is multiplayer game.

Now what I am doing here is..

 public var script : MainScript;
 public var playerPrefab : GameObject;
 
 function Awake(){
 
 script = playerPrefab.GetComponent(MainScript);
 }
 
 function update()
 {
 
 // here I am accessing two variables available in MainScript
 //But it is showing wrong answer.
 //I am doing something like shown below:
 
 Debug.Log(script.variable1); // variable1 is boolean
 // even If I change variable1 dynamicaly in "Mainscript"
 //script.variable1 is not changing.
 
 }

Those variables have "public" access modifier in MainScript. I do not understand what to do now. Please help me.