Index: /views/mods/mod_rechnungen/invoice_pdf.phtml
===================================================================
--- /views/mods/mod_rechnungen/invoice_pdf.phtml	(revision 8178)
+++ /views/mods/mod_rechnungen/invoice_pdf.phtml	(revision 8179)
@@ -299,5 +299,5 @@
 		{
 
-			$arPV = $this->callMod('wpsg_mod_productvars', 'getAllProductVarValues', array($this->view['data']['id'], $p['product_index'] - 1));
+			$arPV = $this->callMod('wpsg_mod_productvars', 'getAllProductVarValues', array($this->view['data']['id'], $p['product_index']));
 
 			if (wpsg_isSizedArray($arPV))