How do you make ecto-tokens

OK you get two bones (normal) and you go to port Phastmys near Dr Frenkenstrainscastle and you go to port Phastmys and there should be a barrier go through and up the stairs and you should see a trap door go down it and go right to thebottom fill a/some buckets with slime go to the top and go up the stairs and use the bones with the machine and you got ecto-tokens