Index: simulator/plugins/treatmentranges/loader.py
===================================================================
diff -u -r1779b6711f3791e8bf570e06ddb4c2e7d2a52e18 -rf4523ffcaff0d27f7392c943f0a487fcb01a7d34
--- simulator/plugins/treatmentranges/loader.py	(.../loader.py)	(revision 1779b6711f3791e8bf570e06ddb4c2e7d2a52e18)
+++ simulator/plugins/treatmentranges/loader.py	(.../loader.py)	(revision f4523ffcaff0d27f7392c943f0a487fcb01a7d34)
@@ -1,14 +1,20 @@
 """
     The Treatment Ranges ui loader
 """
+# Python
 import os
-from simulator.dynamicloader import DynamicLoader
+# Qt
 from PySide2 import QtWidgets
 from PySide2.QtCore import QTimer
 from PySide2.QtCore import Slot
-from dialin.squish import denaliMessages
+# parent
+from simulator.dynamicloader import DynamicLoader
+# hd Simulator
 from dialin.ui.hd_simulator import HDSimulator
+# plugin specific
+# -- none --
 
+
 class Loader(DynamicLoader):
     """
     The Treatment Ranges ui loader
@@ -28,7 +34,6 @@
         super().__init__(os.path.dirname(__file__), hd_simulator)
         print(" ---------- ", self.hd_simulator)
 
-
     def _init_loader(self):
         """
         finds and creates widgets
@@ -65,7 +70,9 @@
         sends the duration message
         :return: none
         """
-        denaliMessages.setTreatmentTime(self.spnDurationMax.value() * 60, value)
+        self.hd_simulator.cmd_set_treatment_time(
+            self.spnDurationMax.value() * 60, value
+        )
 
     @Slot()
     def do_ranges_data(self):
@@ -79,7 +86,7 @@
             self.sldDurationValue.setMinimum(duration_min * 60)
             self.sldDurationValue.setMaximum(duration_max * 60)
 
-            denaliMessages.setTreatmentParamRanges(
+            self.hd_simulator.cmd_set_treatment_parameter_ranges(
                 duration_min,
                 duration_max,
                 self.spnUFVolumeMin.value(),