Something wrong with if else conditions...

Hi ! in my code i am creating a shield power up ... what i want when i collide(collect) RollerShoes powerup, then in my script OnCollitionEnter with Hardle my first block turns false if (rollerShoes== false); and second turns true if (rollerShoes==true), but whats happening OnCollition it executes both of the block... i don't where is the problim :/ here is the code #pragma strict

     var powerUpSound: AudioClip; 
     var rollerShoes: boolean= false; //this is for the rollerShoes power up,when true power up is on
     
     GetComponent(forwardmove);
     GetComponent(Timer);
     GetComponent(MagnetPwup);
     GetComponent(PowerRun);
     GetComponent(TouchJump);
      
     function OnCollisionEnter(player: Collision)
     {
     //////////////Hardle////////////////
             if(player.gameObject.tag=="Hardle")
         {
             if (rollerShoes== false); // for roller shoes power up
             {
             print("rollerShoes is On");
             Application.LoadLevel(0);
 //            Timer.timer=false;
 //            forwardmove.flag1= false;
 //            MagnetPwup.magnet= false;
 //            PowerRun.shield=false;
 //            TouchJump.flag=false;
 //            TouchMovement.flag=false;
             }
 //        }
              if (rollerShoes==true)
             {
             Destroy(player.gameObject);
             print("destroy");
             yield WaitForSeconds(2);
             rollerShoes=false;
             }
         }
         else if(player.gameObject.tag=="Magnet")
         {
             audio.PlayOneShot(powerUpSound);
             Destroy(player.gameObject);
             MagnetPwup.magnet= true;
             yield WaitForSeconds(12);
             MagnetPwup.magnet= false;
         
         }
         
         else if(player.gameObject.tag=="PowerShield")
         {
             audio.PlayOneShot(powerUpSound);
             Destroy(player.gameObject);
             PowerRun.shield= true;
     //        Time.timeScale=2.0;
             yield WaitForSeconds(12);
             Time.timeScale=1.0;        
             PowerRun.shield= false;
         }    
         else if (player.gameObject.tag=="RollerShoes")
         {
             Destroy(player.gameObject);
             rollerShoes=true;
             print("its true");
         }
     }