BCE0044 expecting }, found ".

Your script's syntax is odd, so please make a backup, replace it with my edited version, and tell me if the error is still there.

Please complete the edited version, because I have commented a decision that I need you to make.

 animation.play("Swing");
  
 animation["Swing"].speed = 2;
  
 isswinging = true;
  
 canswing = false;
  
 if(canswing == false)
 {
   
     swingtimer -= swing.deltaTime;
     //Keep the above line if you want it to be activated upon the condition of canswing being false
 }
 //swingtimer -= swing.deltaTime;
 //If you do want t$$anonymous$$s here, please keep it here and delete my code under the 'if canswing == false' condition.
 
 if(swingtimer <= 0)
 {
     swingtimer = 1;
     canswing = true;
     isswinging = false;
 }