Reset Grid - I am refreshing the left grid on click of a button( Next) using validation, but the same refresh is not working

Hi Team,

I have a grid which is editable( left) and there is another grid ( on right side ) which is calculated based on the inputs in left gid. And I am refreshing the left grid on click of a button( Next) using validation, but the same refresh is not working on it, it is retaining the last calculated values. I have tried several event triggers but still I am not able to refresh it. How can I do this.?