diff --git a/slic/utils/pv.py b/slic/utils/pv.py
index 85e44ff7d..950cadd09 100644
--- a/slic/utils/pv.py
+++ b/slic/utils/pv.py
@@ -10,13 +10,15 @@ class PV(epics.PV):
         if not show_progress:
             return super().put(value, *args, **kwargs)
 
-        kwargs["wait"] = True # enforce wait to show progress
+        kwargs["wait"] = True  # enforce wait to show progress
 
         start = self.get()
         stop = value
+        print(f"[DEBUG] PUT start = {start}, stop = {stop}")
 
         with RangeBar(start, stop) as rbar:
             def on_change(value=None, **kw):
+                print(f"[DEBUG] Callback called with value = {value}")
                 rbar.show(value)
 
             with self.use_callback(on_change):