How to map the category in Purchase requisition based on item $ value for punchout functionality.

We have 2 different categories (Supplies and Capital).

Anything under $5000 is considered as Supplies and anything above $5000 is consider as Capital.

So, requirement is if users create the Purchase requisition through punchout that is under $5000 the category should come as Supplies.

If Purchase requisition is above $5000 then category should be Capital.