How to setup a Change Order Approval Rule with negative and positive amount ?

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How to setup a Change Order Approval Rule with negative and positive amount ?

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Hello

I would like to setup a Change Order Approval rule that include negative a positive amounts

Positive example

From 0 to 300K

From -300 to 0

If the total amount of the PO decrease for example the original PO is 10,000 USD but the amount changed to 9,000 USD I need the CO will be approved for the same Manager.

Thanks

Cesar

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