Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -r5fa15db8e36792f83650711ab29755912d229437 -ref85c4f5bd363adfd405faf3b91910363d8030f1
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 5fa15db8e36792f83650711ab29755912d229437)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision ef85c4f5bd363adfd405faf3b91910363d8030f1)
@@ -1005,13 +1005,21 @@
 {
     BOOL result = FALSE;
 
-    if ( message->hdr.payloadLen == sizeof( U32 ) )
+    if ( message->hdr.payloadLen == sizeof( FILL_CMD_T ) )
     {
-        U32 fillToVolumeMl;
+        FILL_CMD_T fillCmd;
 
         result = TRUE;
-        memcpy( &fillToVolumeMl, message->payload, sizeof( U32 ) );
-        startFillCmd( fillToVolumeMl );
+        memcpy( &fillCmd, message->payload, sizeof( FILL_CMD_T ) );
+
+        if ( DG_CMD_START == fillCmd.cmd )
+        {
+            startFillCmd( fillCmd.fillToVolumeMl );
+        }
+        else
+        {
+            stopFillCmd();
+        }
     }
 
     sendAckResponseMsg( (MSG_ID_T)message->hdr.msgID, COMM_BUFFER_OUT_CAN_DG_2_HD, result );