Grid line focus after PAI/PBO

Hi there. I've got such problem. I've got a doubleclick event implemented. Few actions are being triggereed afted that event. But when I doubleclick some row - action is done but focus becomes set in the first row of grid - that is very confusing in my case. could You tell me how to determin focus stays on the row which was doubleclicked ? I'd be very thankful for help. Greetings .