'''[INVOICECHARGES]''' - invoice sum of all charges
'''[INVOICECHARGES:50%]''' - invoice sum of all charges with percentage multiplier
'''[INVOICECHARGES:-100]''' - invoice sum of all charges with offset
'''[INVOICEPAYMENTS]''' - invoice sum of all payments
'''[INVOICEPAYMENTS:50%]''' - invoice sum of all payments with percentage multiplier
'''[INVOICEPAYMENTS:-100]''' - invoice sum of all payments with offset
'''[INVOICECREDITS]''' - invoice sum of all credit items
'''[INVOICECREDITS:50%]''' - invoice sum of all credit items with percentage multiplier
'''[INVOICECREDITS:-100]''' - invoice sum of all credit items with offset
'''[INVOICEDEBITS]''' - invoice sum of all debit items
'''[INVOICEDEBITS:50%]''' - invoice sum of all debit items with percentage multiplier
'''[INVOICEDEBITS:-100]''' - invoice sum of all debit items with offset
'''[INVOICEVAT]''' - invoice sum of all vat value