Openai realtime assistant RAG

Hi,

I’ve been trying to link my ‘Message an Assistant’ module to be able to access a .txt file that I have previously uploaded in OpenAI assistants page. It works perfectly here whenever I’m asking questions in the OpenAI dashboard. However when I tried accessing it in Make.com it is not referring to the file I’ve previously uploaded. Why is this the case and how can I fix it?

Thanks