GUI.RepeatButton not functioning correctly

Hi,
I have a little problem I have encountered, I can´t get the GUI.RepeatButton to work properly on my ios device. I have the most simple setup in the scene trying to move a cube upwards when a button is pressed. This works perfectly when using the mouse but when i use the unity remote app, it only responds when tapped. Is this only happening with the app or am i going to have problem when building as well?

Code (csharp):

1. void OnGUI()
2. {
3.     if(GUI.RepeatButton(new Rect(50,210,500,500),"up"))
4.     {
5.        transform.Translate(Vector3.forward*Time.deltaTime*50);
6.  
7.     }
8. }

thanks for your time
Hintze