OPENAI Functions and Tools

I'm trying this example as it's explained in the help page: https://docs.typebot.io/editor/blocks/integrations/openai But I'm getting the stringified JSON as an answer: {"tool_calls":[ {"id": "call_AmJRCysQpf6IsXUXPqC8an2q", "type": "function", "function": {"name": "getWeather", "arguments": "{"city":"Paris"}"}}]} Instead of an LLM message like: The weather in Paris is sunny and warm, indeed! So, I do not understand the purpose of the Code: if (city === 'Paris') { return 'Sunny and warm' } else { return 'Rainy and cold' }