Error BCE0034

I was working on my pause menu and I got some errors but Someone helped me fix them...but now I have a different error.

Assets/scripts/Pause Menu.js(27,12): BCE0034 : Expressions in statements must only be executed for their side-effects

The whole script is:

 #pragma strict
 
 var PauseGUI : GUIText;
 var paused : boolean = false;
 
 private var FPSInputController : FPSInputController;
 private var MouseLook : MouseLook;
 private var CharacterMotor : CharacterMotor;
 private var Player : Player;
 
 function Start ()
 {
     
     paused = false;
     Time.timeScale = 1;
     PauseGUI.enabled =  false;
     FPSInputController.enabled = true;
     MouseLook.enabled = true;
     Player.enabled = true;
     CharacterMotor.enabled = true;
 }
     
 function Update ()
     {
     if (Input.GetKeyDown("p"))
     {
     paused != paused;
     if(paused){
     Time.timeScale = 0;
     PauseGUI.enabled = true;
     FPSInputController.enabled = false;
     MouseLook.enabled = false;;
     CharacterMotor.enabled = false;;
     Player.enabled = false;}
     else{
     Time.timeScale = 1;
     PauseGUI.enabled = false;
     FPSInputController.enabled = true;
     MouseLook.enabled = true;
     CharacterMotor.enabled = true;
     Player.enabled = true;}
     }
 }

THANKS IN ADVANCE!