TipAdjustment Method
This methods adds a tip to the original sale transaction.
Syntax
void __fastcall TipAdjustment(String PNRef, String GratuityAmount);Remarks
To add a tip to a transaction simply call TipAdjustment with the PNRef parameter set to the PNRef of the transaction you wish to adjust, and the GratuityAmount to the amount you wish to add.