swap-values-between blocks

Hi All,
Good Day
I initially created two blocks with an db item, displayed multiple values on each block and also two push buttons in between of these blocks with the labels "<" and ">" on the same canvas.

user will use this screen to swap the values on a click of a button from one block to another and viz-a-viz.

Can anyone help me in getting the result. I shall strongly appreciate it.

Thanks
srids