Hey @Tjain
See these similar topics:
- How to Upload an Image to Chat and Use It in a Sub-Workflow in n8n? - #6 by solomon
- How to get binary data in the correct way?
In your case I think storing and retrieving the binary file is the best solution.
You can erase the file at the end of the workflow, so the file name can always be the same.
If my reply answers your question, please remember to mark it as a solution.