Modify Transaction # into Receipt #

Mabuhay! Hi! Where can I find how to edit word transaction # and I will replace it with Receipt #. Ive tried replacing that to a string but what happened was it always says 0 trnsaction;

<ROW> Transaction.ReceiptTransactionNumberCaption ":|" Transaction.ReceiptTransactionNumber </ROW>

and i replaced it with;

<ROW> "Receipt #":|" Transaction.ReceiptTransactionNumber </ROW>

Thanks,

Chris