Need help for Custom script which sum up Amount in Last Row of Grid

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doctype : payment_reconcialiation_payment
field : amount

Thanks in advance.

-suresh

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@Suresh_Thakor I suggest to only add a normal field to the parent doctype that hold the sum of amounts . (if it’s not already there) .

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@bahaou, Thanks a lot for reply.

but how to get sum up while click on button not on load of form.

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@Suresh_Thakor using custom scripts you can add buttons . calculate anything at any time and any event.
check it here