Hi Phil,

The problem was that as soon as the "history.back();" executed the numbers looked fine, but inmediately all the values greater than 1,000 got reduced as if they had been divided by 1000. I solved the problem analyzing the client side scripts that came with the page. There was an "init()" javascript function that was executing on every page load, and this function did convert all numeric values on the page form's text boxes. This was ok for the first time the page loaded, but not for subsequent reloads. I solver this using a hidden control value, not is working fine.

Thanks for your interest Phil!