Thanks James for your words, eventhough I post my question in english because I want to learn every day more thant I know and much times I get the answer here with spanish people or english people I feel great for that because you and alls hep to other ones with out received any pay to change of the help.
Some cases I have received answer of my questions that instead to resolve the problem this get more dificul because they tell you a lot of things with out any axample and I consider that after the explanation should be a little example to give the user an idea more clear to resolve they problem.