diff --git a/office-alexander-logistics-app/src/main/webapp/pages/workitems/forms/alexander/sub_positionen.xhtml b/office-alexander-logistics-app/src/main/webapp/pages/workitems/forms/alexander/sub_positionen.xhtml
index c0cdbce..e30a8bc 100644
--- a/office-alexander-logistics-app/src/main/webapp/pages/workitems/forms/alexander/sub_positionen.xhtml
+++ b/office-alexander-logistics-app/src/main/webapp/pages/workitems/forms/alexander/sub_positionen.xhtml
@@ -12,7 +12,7 @@
 				Exchange Rate:<span class="imixs-required">*</span>
 			</dt>
 			<dd>
-				<h:inputText required="true"
+				<h:inputText required="#{validationController.required}"
 					value="#{workitem.item['invoice.exchangerate']}">
 					<f:convertNumber />
 				</h:inputText>