diff --git a/pyhon/commands.py b/pyhon/commands.py
index 6fad60a..7c1e9ee 100644
--- a/pyhon/commands.py
+++ b/pyhon/commands.py
@@ -67,5 +67,5 @@ class HonCommand:
     @property
     def settings(self):
         """Parameters with typology enum and range"""
-        return {s: self._parameters[s] for s in self.setting_keys}
+        return {s: self._parameters.get(s) for s in self.setting_keys if self._parameters.get(s) is not None}
 
diff --git a/pyhon/device.py b/pyhon/device.py
index e63b89d..54ff200 100644
--- a/pyhon/device.py
+++ b/pyhon/device.py
@@ -1,6 +1,7 @@
 import importlib
 
 from pyhon.commands import HonCommand
+from pyhon.parameter import HonParameterFixed
 
 
 class HonDevice:
@@ -93,7 +94,7 @@ class HonDevice:
                 command.set_program(parameters.pop("program").split(".")[-1].lower())
                 command = self.commands[name]
             for key, data in command.settings.items():
-                if parameters.get(key) is not None:
+                if not isinstance(data, HonParameterFixed) and parameters.get(key) is not None:
                     data.value = parameters.get(key)
 
     async def load_commands(self):
diff --git a/pyhon/parameter.py b/pyhon/parameter.py
index 2970fd9..7f4e1f7 100644
--- a/pyhon/parameter.py
+++ b/pyhon/parameter.py
@@ -75,6 +75,7 @@ class HonParameterRange(HonParameter):
 
     @value.setter
     def value(self, value):
+        value = int(value)
         if self._min <= value <= self._max and not value % self._step:
             self._value = value
         else: