Iphone touches, Array index is out of range

Hi folks!!!

I'm around an iphone game where you control your player by tapping a left and a right arrow (gui elements)

what I want is to jump with this method: if you are touching an arrow and you touch an leave the other, the player jump!

this is my code and it works but I got an "Array index is out of range" message:

 if (Input.touchCount > 0 )
 {
     var touch : Touch;
 
     if (Input.touches[0].phase == TouchPhase.Stationary && RightButton.HitTest(Input.touches[0].position))
     {
         //move right
     }
     if (Input.touches[0].phase == TouchPhase.Stationary && LeftButton.HitTest(Input.touches[0].position))
     {
         //move left
     }
     if (Input.touches[0].phase == TouchPhase.Stationary && Input.touches[1].phase == TouchPhase.Ended)
     {
         //jump
     }
 }

that's all :)

tnx a lot!