How do you get past the monster in riddle school 5

Here is a quote from the website linked below.



9) Back into your cell.

Go back to the room with the invisibility machine. Now swipe your card in the card key scanner. This will unlock the door and grant you
access to your cell. Once inside, put the live steak in front of the ventilation shaft. The scent will be carried around the
space ship. Now, hurry outside and click on the invisibility machine. The guard beast will pass by, not seeing you, and will
make it's way into your room for the steak. Now swipe the card in your card in the card key scanner again. The monster is locked inside now.
Make your way to the place it was guarding.