Index: firmware/App/Controllers/DGInterface.h
===================================================================
diff -u -r34e3a456e1d1bcf69b30253c99e59b636346176a -rf4855e9ae62cb94430e61a28a9fbc0c647bb4560
--- firmware/App/Controllers/DGInterface.h	(.../DGInterface.h)	(revision 34e3a456e1d1bcf69b30253c99e59b636346176a)
+++ firmware/App/Controllers/DGInterface.h	(.../DGInterface.h)	(revision f4855e9ae62cb94430e61a28a9fbc0c647bb4560)
@@ -107,6 +107,7 @@
     F32 timeReservoirFillMS;                                                 ///< Reservoir fill time in milliseconds
     U32 timeReservoirWait2SwitchMS;                                          ///< Reservoir wait to switch time in milliseconds
     F32 dialysateFlowLPM;                                                    ///< Dialysate flow in L/min
+    BOOL usePriTargetTempEquation;                                           ///< Use primary heater target temperature estimation equation or not.
 } DG_CMD_DIALYSATE_HEATING_PARAMS_T;
 
 // ********** public function prototypes **********