Ciao Oliver,
thanks for the information,
I try and however I'll let you know 
and for example if i would like put in display time is better to use "normal LiquidCrystal commands" also ? and when i re-draw my screen again I call procedure after m2.setRoot(&m2_null_element); ? Is there a simply example that I can use for take confidence ?
so how do you will implement it ?
thanks 10000000 again :-),
gnnux