Trying to make a highscore screen, hitting lots of errors.

Hey guys, I'm really new to unity and I'm trying to make a local scoreboard for my game, using time (so 1st place=lowest time). I based my code off of the first answer over here http://answers.unity3d.com/questions/20773/how-do-i-make-a-highscores-board.html

It's working really well, but I'm not quite there. This is what I have so far; function AddScore (name : String, score : int) {

     var newScore : int;
     var newName : String;
     var oldScore : int;
     var oldName : String;
     newScore = PlayerPrefs.GetInt("Score");
     newName = PlayerPrefs.GetString("Name");
     for(i=0;i<10;i++){
           if(PlayerPrefs.HasKey(i+"HScore1")){
              if(PlayerPrefs.GetInt(i+"HScore1")>newScore){ 
                 oldScore = PlayerPrefs.GetInt(i+"HScore1");
                 oldName = PlayerPrefs.GetString(i+"HScoreName1");
                 PlayerPrefs.SetInt(i+"HScore1",newScore);
                 PlayerPrefs.SetString(i+"HScoreName1",newName);
                 newScore = oldScore;
                 newName = oldName;
                  }
           else{
              PlayerPrefs.SetInt(i+"HScore1",newScore);
               PlayerPrefs.SetString(i+"HScoreName1",newName);
              newScore = 99999999;
              newName = "";
         }
         }
         }
         }

It's almost working, but on every single line that has an 'i' on it, Im getting the error "BCE0005: Unknown identifier: 'i'."

I really need to get this sorted out, and any help would be greatly appreciated. Thanks.