i don't understand compiler errors here...

I am trying to make all my statistics be deleted and when delete a confirmation box appears, I am using a boolean for showing the GUI. The code is giving me the following errors some of which are not true?

 boolean Draw = true;
 
 function OnMouseDown () {
     if (Draw == true){
         PlayerPrefs.DeleteAll();
         if(GUI.Button(Rect(0, 0, 200, 100 "Statistics Deleted"))}
         {
             Draw = false;
         }
     }
 }