Index: trunk/core/kernel/db/db_tag_processor.php
===================================================================
diff -u -r2381 -r2390
--- trunk/core/kernel/db/db_tag_processor.php	(.../db_tag_processor.php)	(revision 2381)
+++ trunk/core/kernel/db/db_tag_processor.php	(.../db_tag_processor.php)	(revision 2390)
@@ -476,7 +476,8 @@
 		}
 		else
 		{
-			if (isset($params['currency'])) {
+			if( $this->HasParam($params, 'currency') )
+			{
 				$iso = $this->GetISO($params['currency']);
 				$original = $object->GetDBField($field);
 				$value = $this->ConvertCurrency($original, $iso);
@@ -499,7 +500,8 @@
 			}
 			$value = $object->GetField($field, $format);
 			
-			if (isset($params['currency'])) {
+			if( $this->HasParam($params, 'currency') )
+			{
 				$value = $this->AddCurrencySymbol($value, $iso);
 				$params['no_special'] = 1;
 			}
@@ -520,7 +522,8 @@
 		
 		if ($value != '') $this->Application->Parser->DataExists = true;
 		
-		if (isset($params['currency'])) {
+		if( $this->HasParam($params, 'currency') )
+		{
 			//restoring value in original currency, for other Field tags to work properly
 			$object->SetDBField($field, $original); 
 		}