Student here, have a doubt about molding

Hey, I've been told to make a mold for a form made out of XPS foam im supposed to use Plaster of Paris for making the mold. Now my professor suggested us to use Mansion Wax as mold release I wanted to ask if I can use vaseline instead of Mansion wax as its too late for me to get Mansion right now.

P.S.- I didn't know where to post so I'm posting it here, sorry🥹