Is there a way to pass "vm-memory" for osc build to OBS workers ?

I am able to use "osc build vm-memory 14336" for a package build on my local machine. Is there a way to pass the vm-memory parameter when package is built in OBS workers ? I did not found anything about that in online OBS doc https://openbuildservice.org/files/manuals/obs-user-guide.pdf (the <memory> in _constraints is not used for that) -- Michel Normand