[Forums] Rest api instead of php curl

I already test the php api that they gave me and that one is working, so with curl its working.

I would belive that the Add Header will not have inpact on the submit, because the header is not connected to the submit. So I think this will not be possible. I already tried it with the resp api from OS and that is working only I then cannot add the binary file to it. Im stuck here :(