fix (example): replace post back

app/static/gallery/factory-ai.html

@@ -14,7 +14,7 @@
 <div style="width: 100%; height: 35%; background-color: grey; text-align: center">
   <div style="font-size: larger; font-weight: bold;">Control Panel</div>
   <span id="alert" style="width: 20%; display: inline-block; vertical-align: middle">
-    <state-pane-oid initial="N">
+    <state-pane-oid initial="N" subscribe="update/alert~state">
       <image-oid id="N" source="assets:images/light-green.svg"></image-oid>
       <image-oid id="P" source="assets:images/light-red.svg"></image-oid>
     </state-pane-oid>
@@ -35,7 +35,7 @@
   </span>
   <span id="ml-proxy">
     <rest-oid custom="factory-predictor"
-              subscribe="predictor/train~get/train;predictor/temperature~get/temperature;predictor/pressure~get/pressure"
+              subscribe="predictor/train~post/train;predictor/temperature~post/temperature;predictor/pressure~post/pressure"
               publish="dispatch~update/alert">
     </rest-oid>
   </span>