So... Tobyb121 is absolutly right, i think this solve the problem, and sorry guys, i didnt specified my problem....
The code i made didnt turn the light on when it needs to, and when lcd shows the menu and i try to press the button, doesnt happen anything ... (I think Tobyb121 solved this problems)...
Anyways, i will make the changes Tobyb121 adviced and see what happens, soon i post here again!
EDIT::: So, i wrote the code and.. my problem is solved xD
thank you Tobyb121 u helped me alot