Jim,
the data for ss_coupon_discount[] is listed as a number with a comma in the data.
ie: ss_coupon_discount[0]=-1,793.30;
If you try to output this variable, the browser will cut off at the comma. the comma needs to be removed.
Please see this on a receipt development page which will become our thank you page.
http://dmindust.ipower.com/store/BulkContainers.html
MarkB