Call Method from Form Customization GetPayBTFlagDefaults

This is probably something easy. I’ve ran the trace log on Sales Order Entry. When billing type is picked as UPS Freight Collect method GetPayBTFlagDefaults is ran and selects the customers UPS Account number from the customer record.

Can I get some help calling this method myself? The goal is to select the billing type and account # for specific customer, when Ship Via is picked for UPS Ground.

businessObject>Erp.Proxy.BO.SalesOrderImpl</businessObject
methodName>GetPayBTFlagDefaults</methodName
changedValue tableName=“OrderHed” rowState=“Modified” rowNum=“0” colName=“PayFlag”></changedValue

I could do this with BPM but i’d rather not.

I found this in simple search. Maybe I can do something overcomplicated using this.

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also found this
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