diff --git a/dev/sample_plugin/__init__.py b/dev/sample_plugin/__init__.py
index 1a79b76f4b..0edd07a838 100644
--- a/dev/sample_plugin/__init__.py
+++ b/dev/sample_plugin/__init__.py
@@ -7,8 +7,8 @@
 #  https://www.smarthomeNG.de
 #  https://knx-user-forum.de/forum/supportforen/smarthome-py
 #
-#  Sample plugin for new plugins to run with SmartHomeNG version 1.8 and
-#  upwards.
+#  Sample plugin for new plugins to run with SmartHomeNG version 1.10
+#  and up.
 #
 #  SmartHomeNG is free software: you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by
diff --git a/lib/utils.py b/lib/utils.py
index de31c528d6..07f08d1414 100644
--- a/lib/utils.py
+++ b/lib/utils.py
@@ -291,7 +291,8 @@ def is_timeframe(string: str) -> bool:
             return False
 
     @staticmethod
-    def to_timeframe(value: str | int) -> int:
+#    def to_timeframe(value: str | int) -> int:  # works for Python 3.10 and above
+    def to_timeframe(value: str) -> int:        # works for Python 3.9 and under
         """
         Converts a timeframe value to milliseconds. See is_timeframe() method.
         The special value 'now' is supported for the current time.
@@ -359,8 +360,10 @@ def is_float(string: str) -> bool:
             return False
 
     @staticmethod
-    def to_bool(value: str|int|float, default: bool='exception') -> bool:
-        """
+#    def to_bool(value: str|int|float, default: bool='exception') -> bool:   # works for Python 3.10 and above
+    def to_bool(value: str, default: bool = 'exception') -> bool:           # works for Python 3.9 and under
+
+            """
         Converts a value to boolean.
 
         Raises exception if value is a string and can't be converted and if no default value is given