Thank you for your message. I am sorry you are having this problem.
When you say nothing happens, do you mean that the upload of the file as a structure reference fails or it appears that the structure reference is ignored when the image is generated?
If it is the former (fails to upload), please reply with a screen recording showing you uploading.
If it is the latter (ignored), please reply with a screen shot after generation. It would also be helpful if you included the file you are using as a structure reference.