MvDo Function, MVT, Miva Merchant 9+, Engine v5.22+
<mvt:do file="g.Module_Root $ '/modules/payment/customercredit.mvc'" name="l.success" value="CustomerCredit_Authorize_LowLevel(module var, cust_id, order_id, amount, orderpayment var)" />
module var
cust_id
order_id
amount
orderpayment var