public void OnPointerClick(PointerEventData data)
 {
     //tell monitarField to create monitor
     _field = (MonitARField)FindObjectOfType(typeof(MonitARField));
     _field.CreateMonitor();
 }
 void OnMouseDown()
 {
     //tell monitarField to create monitor
     _field = (MonitARField)FindObjectOfType(typeof(MonitARField));
     _field.CreateMonitor();
 }