Index: lams_monitoring/web/gate/gateInfo.jsp
===================================================================
diff -u -rd3b4ae35d37206b31ca462b0a9411e45e28ce5ec -r95574f488cd396cd8e0e246a091a23dca4190e4f
--- lams_monitoring/web/gate/gateInfo.jsp	(.../gateInfo.jsp)	(revision d3b4ae35d37206b31ca462b0a9411e45e28ce5ec)
+++ lams_monitoring/web/gate/gateInfo.jsp	(.../gateInfo.jsp)	(revision 95574f488cd396cd8e0e246a091a23dca4190e4f)
@@ -39,7 +39,7 @@
 		<c:if test="${not GateForm.map.readOnly}"> 
 			<c:if test="${not GateForm.map.gate.gateOpen}" >
 				<html:form action="/gate?method=openGate" target="_self">
-					<input type="hidden" name="activityId" value="${param.activityID}" />
+					<input type="hidden" name="activityId" value="${GateForm.map.activityId}" />
 					<p><html:submit styleClass="button"><fmt:message key="label.gate.open"/></html:submit></p>
 				</html:form>
 			</c:if>