How delete a error message?

Hi,
I did the code below to make appear a joystick when I touch the left side of the screen : it’s functional but i’ve got a message error each time I touch the right side. How to delete this message error without change my solution?

Script:

Touch mytouch = Input.GetTouch (0);

//Multitouch adaptation
for(short i = 1; mytouch.position.x > (Screen.width / 2); i++)
{
	mytouch = Input.GetTouch (i);
}

Error message :

ArgumentException: Index out of bounds.
ActiveButton.Update () (at Assets/Game/Scripts/ActiveButton.cs:29)

Input.GetTouch expect an index to be between 0 and Input.touchCount - 1

Your for loop doesn’t make sense at all. You’re generating strange, strange indices.

Try something like this, and adapt to get it working the way you want it.

 // .......
 Touch mytouch = default(Touch);
 bool wasTouchedInRightArea = false;
 
 //Multitouch adaptation
 for(int i = 0; i < Input.touchCount; ++i)
 {
     mytouch = Input.GetTouch (i);
    
     // If any touch is on the right side of screen
     if (touch.position.x > (Screen.width / 2))
     {
         // Stop looking at the other touches
         wasTouchedInRightArea = true;
         break;
     }
 }

if (wasTouched)
{
    switch (mytouch) 
    // .......