[TYPO3-commerce] extensions of the extension using $this->piVars

[Peter Waechtler]

hello again,

i am busy extending commerce a little - am wanting to show the gn_id  
which is stored in the fe_users table:

	function additionalMarker($markerArray,&$subpartArray,&$this) {
		echo $this->piVars["order_id"];
		$res = $GLOBALS['TYPO3_DB']->exec_SELECTquery 
('fe_users.tx_gn_gn_id', 'fe_users, tx_commerce_orders',  
'fe_users.uid = tx_commerce_orders.cust_fe_user AND  
tx_commerce_orders.order_id = ' . $this->piVars["order_id"]);
		$row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res);
		$markerArray['###REP_ID###'] = $row['tx_gn_gn_id'];
		return $markerArray;
	}

the marker is displays nicely on my local webserver. as soon as i put  
the extension online - to the live server the line:  echo $this- 
 >piVars["order_id"]; does not return anything and the of course i  
get a sql error.

both systems are running typo3 4.1.2. the local machine is running on  
mysql 5.0.45 and the remote on mysql 5.0.41

have you got any idea why $this->piVars["order_id"] has got a value  
on the one system and is empty on the remote? all else is working fine.

thanks,
piet