Again - sort problem

Hi Alex,
first of all, nice work with ActiveWidgets.

I have a small, but anoing problem. I've searched this forum, but didn't found anything usefull to solve it. I have two grids on one page - first is using xml model and second is using js arrays as data source. The first grid can be refreshed and items in second grid can be deleted. Everythink is working fine, but when i sort any column, first grid has no data after refresh and second grid falls down with error - 'myData[...]' is null or not an object. I found many ideas how to make similar problems work, but none worked. Can you or people using this gread widget help me?

Many thanx. Matej