fix: tool call id use in a wrong way

camel/models/cohere_model.py

@@ -57,6 +57,7 @@ def __init__(
         super().__init__(
             model_type, model_config_dict, api_key, url, token_counter
         )
+        self.tool_call_id = None
         self._client = cohere.ClientV2(api_key=self._api_key)
 
     def _to_openai_response(self, response: 'ChatResponse') -> ChatCompletion:
@@ -124,6 +125,10 @@ def _to_openai_response(self, response: 'ChatResponse') -> ChatCompletion:
     def _to_cohere_chatmessage(
         self, messages: List[OpenAIMessage]
     ) -> List["ChatMessageV2"]:
+        import ast
+        import json
+        import uuid
+
         from cohere.types import ToolCallV2Function
         from cohere.types.chat_message_v2 import (
             AssistantChatMessageV2,
@@ -144,19 +149,30 @@ def _to_cohere_chatmessage(
             elif role == "function":
                 new_message = ToolChatMessageV2(
                     role="tool",
-                    tool_call_id="0",
+                    tool_call_id=self.tool_call_id,  # type: ignore[arg-type]
                     content=content,  # type: ignore[assignment,arg-type]
                 )
             elif role == "assistant":
+                if function_call is None:
+                    new_message = AssistantChatMessageV2(  # type: ignore[assignment]
+                        role="assistant",
+                        content=content,  # type: ignore[arg-type]
+                    )
+                    continue
+                arguments = function_call.get("arguments")  # type: ignore[attr-defined]
+                arguments_dict = ast.literal_eval(arguments)
+                arguments_json = json.dumps(arguments_dict)
+                assis_tool_call_id = str(uuid.uuid4())
+                self.tool_call_id = assis_tool_call_id  # type: ignore[assignment]
                 new_message = AssistantChatMessageV2(  # type: ignore[assignment]
                     role="assistant",
                     tool_calls=[
                         ToolCallV2(
-                            id="0",
+                            id=assis_tool_call_id,
                             type="function",
                             function=ToolCallV2Function(
                                 name=function_call.get("name"),  # type: ignore[attr-defined]
-                                arguments=function_call.get("arguments"),  # type: ignore[attr-defined]
+                                arguments=arguments_json,  # type: ignore[attr-defined]
                             ),
                         )
                     ]
@@ -173,7 +189,9 @@ def _to_cohere_chatmessage(
                 raise ValueError(f"Unsupported message role: {role}")
 
             new_messages.append(new_message)
-
+        print("6666666666666666666666666666666666666666")
+        print(new_messages)
+        print("8888888888888888888888888888888888888888")
         return new_messages  # type: ignore[return-value]
 
     @property
@@ -210,6 +228,9 @@ def run(self, messages: List[OpenAIMessage]) -> ChatCompletion:
                 model=self.model_type,
                 **self.model_config_dict,
             )
+            print("22222222222222222222222222222222222222222")
+            print(response)
+            print("33333333333333333333333333333333333333333")
         except ApiError as e:
             logging.error(f"Cohere API Error: {e.status_code}")
             logging.error(f"Error body: {e.body}")

camel/toolkits/math_toolkit.py

@@ -47,7 +47,7 @@ def sub(self, a: int, b: int) -> int:
         Returns:
             integer: The result of subtracting :obj:`b` from :obj:`a`.
         """
-        return a - b
+        return int(a) - int(b)
 
     def mul(self, a: int, b: int) -> int:
         r"""Multiplies two integers.