InfoPath Dev

 i have create a repeating  table with several textbox .and I want a value from the textbox to be on the next repeating table and it should follow every time a new repeating table is open but the value is calculated very time on each repeating table open , suppose if the value is on the repeating table one it should go on the 2nd ...

hi how can I get  a value from one repeating to other I need the value to auto calculate on the repeating table  2nd, 3rd , 4th.......................