diff --git a/src/myfasthtml/controls/TabsManager.py b/src/myfasthtml/controls/TabsManager.py
index 0cef558..6255899 100644
--- a/src/myfasthtml/controls/TabsManager.py
+++ b/src/myfasthtml/controls/TabsManager.py
@@ -176,7 +176,7 @@ class TabsManager(MultipleInstance):
       content = component
     
     return Div(
-      content if content else Div("No active tab", cls="mf-empty-content"),
+      content if content else Div("No Content", cls="mf-empty-content"),
       cls="mf-tab-content",
       id=f"{self._id}-content"
     )
diff --git a/src/myfasthtml/core/commands.py b/src/myfasthtml/core/commands.py
index f70eb7c..bb896a7 100644
--- a/src/myfasthtml/core/commands.py
+++ b/src/myfasthtml/core/commands.py
@@ -116,6 +116,19 @@ class Command(BaseCommand):
     self.args = args
     self.kwargs = kwargs
   
+  def _convert(self, key, value):
+    if key in self.callback_parameters:
+      param = self.callback_parameters[key]
+      if param.annotation == bool:
+        return value == "true"
+      elif param.annotation == int:
+        return int(value)
+      elif param.annotation == float:
+        return float(value)
+      elif param.annotation == list:
+        return value.split(",")
+    return value
+  
   def execute(self, client_response: dict = None):
     ret_from_bindings = []
     
@@ -129,7 +142,7 @@ class Command(BaseCommand):
     if client_response:
       for k, v in client_response.items():
         if k in self.callback_parameters:
-          new_kwargs[k] = v
+          new_kwargs[k] = self._convert(k, v)
     if 'client_response' in self.callback_parameters:
       new_kwargs['client_response'] = client_response