Thanks, I've modified the code you give me, but the error still showing, i add a link to show the photos that i took
https://dl.dropbox.com/u/57429772/2012-11-15-1452.jpg
https://dl.dropbox.com/u/57429772/2012-11-15-1447.jpg
the first number is the porcentage, but when i move the potenciometer to change it, the last numbers doesnt erase or they change the position, thats why there are 2 points.
the 2nd num is just an analog read.
3rd is just a counter
4th is "litros" that shows other numbers or symbols.
And thanks a lot for your help.