How to create AIF to Confirm shipment?

I'm looking to "Confirm shipment" when submitting a TransferID/OrderNum:

This is the code that executes the Confirm shipment:

I believe the steps are:

1.  Tools > AIF > Create document service

2.  With update and with Regenerate data object classes and Update AxBC classes checked

3. After it's generated, modify the update class with the code above. But how would I pass in the TransferID/OrderNum to execution code:  shipPlanningListPageForm.btnShipConfirm_clicked(whsShipmentTable_ds);?

Also, where is this code, I can't seem to find it: shipPlanningListPageForm?

Any direction is appreciated, thanks!