Header Level Hold in Sales order using total amount

Summary:As Oracle OM HOLD coming on 23D version update need to apply hold for the SO with total order amount more then 8500.

I have tried finding the groovy script but not able to process the hold on SO.

Need to apply the Extension for the order total and apply hold automatically using groovy script in manage order extension.

I have checked all the oracle docs and there is no such detail related to the order total amount hold.

I have checked this details in document but its not working needed the exact extension to run the flow

USE ORDER MANAGEMENT EXTENSIONS TO APPLY HOLDS ON ORDER HEADERS