Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -r80028d3b1eef322950c1a5b74c282df2ba989ff5 -r3461c140ba07e74863dee1d4c51d0119076fecf8
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 80028d3b1eef322950c1a5b74c282df2ba989ff5)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 3461c140ba07e74863dee1d4c51d0119076fecf8)
@@ -1952,22 +1952,22 @@
  *************************************************************************/
 void handleConcentratePumpStateChangeRequest( MESSAGE_T *message )
 {
+    TEST_OVERRIDE_ARRAY_PAYLOAD_T payload;
     BOOL result = FALSE;
 
     // verify payload length
-    if ( ( sizeof( BOOL ) == message->hdr.payloadLen ) && ( TRUE == isTestingActivated() ) )
+    if ( ( sizeof( TEST_OVERRIDE_ARRAY_PAYLOAD_T ) == message->hdr.payloadLen ) && ( TRUE == isTestingActivated() ) )
     {
         result = TRUE;
 
-        BOOL payload;
-        memcpy( &payload, message->payload, sizeof( BOOL ) );
-        if ( TRUE == payload )
+        memcpy( &payload, message->payload, sizeof( TEST_OVERRIDE_ARRAY_PAYLOAD_T ) );
+        if ( ( BOOL )payload.state.u32 )
         {
-            requestConcentratePumpsOn();
+            requestConcentratePumpsOn( ( CONCENTRATE_PUMPS_T )payload.index );
         }
         else
         {
-            requestConcentratePumpsOff();
+            requestConcentratePumpsOff( ( CONCENTRATE_PUMPS_T )payload.index );
         }
     }