Customer Email Modification HELP!

[marknc]

I am using a plug-in from SmartDecision designed for Actinic called the "Loyalty Scheme". It provides vouchers and offer code discounts. It all works fine and all I want to do is include the voucher code in the Customer Email. It already shows on the Customer receipt page at the website, both the voucher code and value.

I did this already with How Found, Comments and Referer which needed a modification to Orderscript.pl which I found here. This all works fine too.

I have tried adding:
$ACTINIC::B2B->SetXML('INVOICEUSERDEFINED', $::g_GeneralInfo{'INVOICEUSERDEFINED'});
under 'CUSTOMER NAME' and:
$::s_VariableTable{$::VARPREFIX.'INVOICEUSERDEFINED'} = $::g_GeneralInfo{'INVOICEUSERDEFINED'};
under 'Build the receipt'
Then adding <Actinic:INVOICEUSERDEFINED/> to the Customer Email.
Following a test run all that showed was the code "<Actinic:INVOICEUSERDEFINED/>"

I am a designer not a coder and I daren't go any further. I realize that officially, there is no support for these types of modifications but if anyone can help with this I would really be indebted and can certainly offer advice on design in return.
Mark

[marknc]

customer email

I fixed my own problem! I was on the right track but my code was incorrect it should be:
$ACTINIC::B2B->SetXML('INVOICEUSERDEFINED', $::g_BillContact{'USERDEFINED'});
under 'CUSTOMER NAME' and:
$::s_VariableTable{$::VARPREFIX.'INVOICEUSERDEFINED'} = $::g_BillContact{'USERDEFINED'});
under 'Build the receipt'
Then adding <Actinic:INVOICEUSERDEFINED/> to the Customer Email.
This shows the voucher code in Customer Email.
Mark