Index: firmware/App/Services/DDInterface.c
===================================================================
diff -u -rdf17e43dd693c0c3fc7214e7f32ee6c84ac16d48 -r1cdfbc57c695efa2a1576683d78b238a0a7dbfba
--- firmware/App/Services/DDInterface.c	(.../DDInterface.c)	(revision df17e43dd693c0c3fc7214e7f32ee6c84ac16d48)
+++ firmware/App/Services/DDInterface.c	(.../DDInterface.c)	(revision 1cdfbc57c695efa2a1576683d78b238a0a7dbfba)
@@ -120,7 +120,7 @@
     dialysateDeliveryCmdSet.bicarbConvFactor  = 0.0F;
     dialysateDeliveryCmdSet.sodium            = 0;
     dialysateDeliveryCmdSet.bicarbonate       = 0;
-    //dialysateDeliveryCmdSet.substitutionRate  = 0.0F;
+    dialysateDeliveryCmdSet.substitutionRate  = 0.0F;
 }
 
 /**********************************************************************//**
@@ -401,7 +401,7 @@
     dialysateDeliveryCmdSet.bicarbConvFactor = bicarbConvFactor;
     dialysateDeliveryCmdSet.sodium           = sodium;
     dialysateDeliveryCmdSet.bicarbonate      = bicarbonate;
-    //dialysateDeliveryCmdSet.substitutionRate = 0.0F;
+    dialysateDeliveryCmdSet.substitutionRate = 0.0F;
 
 #ifndef TEST_UI_ONLY
     sendMessage( MSG_ID_DD_GEN_DIALYSATE_REQUEST_DATA, COMM_BUFFER_OUT_CAN_TD_2_DD, (U08*)(&dialysateDeliveryCmdSet), sizeof( DIALYSATE_DELIVERY_REQ_PAYLOAD_T ) );
@@ -614,7 +614,7 @@
 {
     if ( TRUE == dialysateDeliveryCmdSet.start )
     {
-        //dialysateDeliveryCmdSet.substitutionRate = qs;
+        dialysateDeliveryCmdSet.substitutionRate = qs;
 #ifndef TEST_UI_ONLY
         sendMessage( MSG_ID_DD_GEN_DIALYSATE_REQUEST_DATA, COMM_BUFFER_OUT_CAN_TD_2_DD, (U08*)(&dialysateDeliveryCmdSet), sizeof( DIALYSATE_DELIVERY_REQ_PAYLOAD_T ) );
 #endif