Grid x dataprocessor

Hi.
I am starting with grid and dataprocessor now and i have the follow problem:

1 - My grid have two coluns: ch, str.
2 - My dataProcessor is configured like this:
dp=new dataProcessor(“concurso.do?metodo=processar&t=”+ new Date().getTime());
dp.setTransactionMode(“POST”, true);
dp.init(mygrid);
3 - Each change in a row of grid shoud be send to the server imediately.
4 - Whem i mark the checkbox in grid the first time it’s work very well. When I change the mark of the checkbox the same row the request not is send to the server again.

5 - I think this happen because the cash of browse save the requests sends, but i have sure. I think if is possible change the url of dataProcessor my problem is solved, but i don’t find a method for this.

Somebody can help me plis?

Forgive my write, i am Brazil and don’t know english very well.

Most problem the problem is in response, if server side doesn’t produce valid xml response with actual sid and tid values the issue similar to the one in your case can occurs.