diff --git a/lang_agent/components/conv_store.py b/lang_agent/components/conv_store.py
index 0776b92..3dc8e7e 100644
--- a/lang_agent/components/conv_store.py
+++ b/lang_agent/components/conv_store.py
@@ -105,4 +105,8 @@ class ConversationPrinter:
             self.id_dic[conv_id] += len(to_print_msg)
  
 CONV_STORE = ConversationStore()
-# CONV_STORE = ConversationPrinter()
\ No newline at end of file
+# CONV_STORE = ConversationPrinter()
+
+def use_printer():
+    global CONV_STORE
+    CONV_STORE = ConversationPrinter()