Invoice Template Currency

invdetails -> List page -> EVENT_BEFOREQUERY_LIST (line 5): $currency["SCURRENCY"] =$locale_info["LOCALE_SCURRENCY"];

invoices -> Add page -> EVENT_BEFORESHOW_ADD (line 6): $currency["SCURRENCY"] = $locale_info["LOCALE_SCURRENCY"];

invoices -> Edit page -> EVENT_BEFORESHOW_EDIT (line 5): $currency["SCURRENCY"] = $locale_info["LOCALE_SCURRENCY"];
Replace strings in BOLD as above by $currency["SCURRENCY"]=""; and thanks to Sergey and his team, this very customizable invoice template allows you to ADD a CURRENCY FIELD at any wished place to finally enable you to switch among whatsoever currency you may need on per record basis ..., HTH ;-)

Thank you for your answer walk2fly,
I did what you write

and also changed the value of calculated tax in event from currency to number

then an extra field with currency symbol. And now have a multi-currency

Not sure is the best way but works.

and Yes they did great job as always, invoice template is a "must have" not only for invoice but also for quotes and other documents.

Thanks again