Are asking this question as it appears that Legacy OS 2 isn't using swap. It will when needed.How do I make swap file work in Legacy OS 2 ?
On the right sidebar click "Drives" pick MUT (Can also be found in the main menu)
In MUT you'll see the swap drive listed.
Are you trying to run a swap file inside the Legacy OS 2 partition instead of a separate partition which is the normal?