Purchasing document approval rules using amount accumulated by a specific segment of code

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Hello

We need to create Purchasing document approval rules using amount accumulated by cost centre in order to achieve this: For example:

*Cost Centre: 101010

Luis approve until 1000

Luis then Erika approve since 1000.01 until 1500

Luis then Erika then Liliana approve since 1500.01

*Cost Centre: 202020

Monica approve until 1000

Monica then Victor approve since 1000.01 until 1500

Monica then Victor then Daniel approve since 1500.01

If we have a PO with 7 PO Lines as following}.

Línea Cost Centre Amount line

1 101010 1200

2 202020 400

3 101010 350

4 202020 650

Amount accumulated in Cost Centre 101010 is 1200+350 = 1550 so should be approved by Luis then Erika then Liliana. Amount accumulated in Cost Centre 202020 is 400+650 = 1050 so should be approved by Monica then Victor. How can we create document purchase aproval rules to get that we need?