Javascript issue with dhtmlxgrid component

We are using the dhtmlxgrid component from the [login to view URL] suite in some php scripts. We are experiencing some problems to update values in the database in one of the scripts, whereas it is working in others. Probably it's because of some javascript error we are not able to find. We will provide the two scripts to the selected coder: the one that works and the one that does not work. Demonstrable previous experience with DHTMLX components will be highly appreciated. We are looking for a long term relationshipt to continue working with us in improving our existing scripts. For this job, we don't stimate a budget of more than $40 or $50. Bids higher than that value will be silently discarded. Thanks in advance