diff --git a/lollms/personality.py b/lollms/personality.py
index afc1df7..2c3de08 100644
--- a/lollms/personality.py
+++ b/lollms/personality.py
@@ -46,6 +46,12 @@ from lollms.com import LoLLMsCom
 from lollms.helpers import trace_exception
 from lollms.utilities import PackageManager
 
+import pipmaster as pm
+
+if not pm.is_installed("inspect"):
+    pm.install("inspect")
+import inspect
+
 from lollms.code_parser import compress_js, compress_python, compress_html
 
 
@@ -2057,11 +2063,18 @@ class StateMachine:
 
         for cmd, func in commands.items():
             if cmd == command[0:len(cmd)]:
-                try:
-                    func(command, full_context, callback, context_state, client)
-                except:# retrocompatibility
-                    func(command, full_context, client)
-                return
+                # Get the number of parameters the function expects
+                param_count = len(inspect.signature(func).parameters)
+
+                if param_count == 3:
+                    # Old version of the function
+                    return func(command, full_context, client)
+                elif param_count == 5:
+                    # New version of the function
+                    return func(command, full_context, callback, context_state, client)
+                else:
+                    raise ValueError(f"Unexpected number of parameters for function {func.__name__}. Expected 3 or 5, got {param_count}")
+
 
         default_func = current_state.get("default")
         if default_func is not None:
diff --git a/lollms/services/tts/xtts/lollms_xtts.py b/lollms/services/tts/xtts/lollms_xtts.py
index 02debd7..1399412 100644
--- a/lollms/services/tts/xtts/lollms_xtts.py
+++ b/lollms/services/tts/xtts/lollms_xtts.py
@@ -20,7 +20,7 @@ import pipmaster as pm
 if version.parse(str(pm.get_installed_version("numpy"))) > version.parse(str("1.26.9")):
     pm.install_version("numpy", "1.26.4")
 
-if pm.is_installed("pydub"):
+if not pm.is_installed("pydub"):
     pm.install("pydub")
 
 import numpy as np
diff --git a/requirements.txt b/requirements.txt
index d57a700..744ac50 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,4 +21,6 @@ python-socketio[client]
 python-socketio[asyncio_client]
 
 freedom-search
-scrapemaster
\ No newline at end of file
+scrapemaster
+
+inspect
\ No newline at end of file