In a grid one field is Present and the other is Previous.The structure is like this:

MONTH PREVIOUS PRESENT
Jan 1000 1500

Now how can I SET CARRY TO PREVIOUS column for the value in the PRESENT column?i.e,

MONTH PREVIOUS PRESENT
Jan 1000 1500
Feb 1500 1800

and so on.........

Also in which event or method of the grid will the SET CARRY ON and SET CARRY TO code will be written?
Thank you in advance;
Zaraq Bari

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