Fix absolute humidity sensor on HmIP-WGT glass thermostats (#162455)

homeassistant/components/homematicip_cloud/sensor.py

@@ -556,16 +556,8 @@ class HomematicipAbsoluteHumiditySensor(HomematicipGenericEntity, SensorEntity):
     @property
     def native_value(self) -> float | None:
         """Return the state."""
-        if self.functional_channel is None:
-            return None
-
-        value = self.functional_channel.vaporAmount
-
-        # Handle case where value might be None
-        if (
-            self.functional_channel.vaporAmount is None
-            or self.functional_channel.vaporAmount == ""
-        ):
+        value = self._device.vaporAmount
+        if value is None or value == "":
             return None
 
         return round(value, 3)