I am using UPSv2 shipping module, www.lowmips.com/joomla/free-software/category/4-upsv2
When creating a pdf file, vminvoice gives the following error, Fatal error: Call to a member function convert() on a non-object in ../classes/shipping/upsv2.php on line 1340

line 1340: // convert the currency to whatever the user chose
$user_currency_shipping = $GLOBALS['CURRENCY']->convert($order_shipping,$shipping_currency,$this->currency);

How can I add the CURRENCY variable in vminvocie?

Hello,

note sure where this $CURRENCY variable should be coming from.
In the latest VirtueMart versions, variable $CURRENCY_DISPLAY is used for currency values display.

This shipping plugin possibly uses some external class that needs to be loaded and the loading call is missing.
I have checked the code and it rewrites many of the VirtueMart default files, so it may thus create incompability.

In case you would need to get this resolved, we would need to debug the call to this module line by line to be able to reveal the reason and fix it. This would however fall already within a paid support.

according to the maker:
The global $CURRENCY is set in global.php, lines 40-53. It is a user-chosen currency conversion class, but VirtueMart only ships with one default converter, located in administrator/components/com_virtuemart/classes/currency/convertECB,php.

In such case, you may need add call to load the global.php file or the Currency module self directly.