--- typo3_src-4.3.3/t3lib/jsfunc.inline.js	Di Apr 13 14:48:31 2010
+++ jsfunc.inline.js	Di Apr 13 14:49:19 2010
@@ -750,7 +750,7 @@
 	splitFormElementName: function(formElementName) {
 		// remove left and right side "data[...|...]" -> '...|...'
 		formElementName = formElementName.substr(0, formElementName.lastIndexOf(']')).substr(formElementName.indexOf('[')+1); 
-		var parts = objectId.split('][');
+		var parts = formElementName.split('][');
 
 		return parts;
 	},