Index: simulator/plugins/ultrafiltration/loader.py
===================================================================
diff -u -r9206e36aeff354823f2c37103d79f548221cd64c -r1779b6711f3791e8bf570e06ddb4c2e7d2a52e18
--- simulator/plugins/ultrafiltration/loader.py	(.../loader.py)	(revision 9206e36aeff354823f2c37103d79f548221cd64c)
+++ simulator/plugins/ultrafiltration/loader.py	(.../loader.py)	(revision 1779b6711f3791e8bf570e06ddb4c2e7d2a52e18)
@@ -7,6 +7,7 @@
 from PySide2.QtCore import Slot
 from dialin.squish import denaliMessages
 from dialin.squish.denaliMessages import txStates, EResponse
+from dialin.ui.hd_simulator import HDSimulator
 
 
 class Loader(DynamicLoader):
@@ -31,8 +32,9 @@
     spnUfResumeRejectReason: QtWidgets.QSpinBox
     sldUfVolume: QtWidgets.QSlider
 
-    def __init__(self):
-        super().__init__(os.path.dirname(__file__))
+    def __init__(self, hd_simulator: HDSimulator):
+        super().__init__(os.path.dirname(__file__), hd_simulator)
+        print(" ---------- ", self.hd_simulator)
 
     def _init_loader(self):
         """