Android: GUI.RepeatButton only working when I lift my finger

Okay so I'm making a game where you can push a button to move left and push another to go right. I'm doing this by having a GUI.RepeatButton that moves the player so long as the button is held down. Well nothing happens on my android device until I release the button and it just moves a little bit because I am hard setting the velocity. This does work when I tested this on PC using a mouse. Example:

if (GUI.RepeatButton (buttonRect, "Right")) { transform.GetComponent ().velocity = transform.forward * movementForce;

}