Hello again, no special setup are needed apart from the map notetag.
I hope you didn't literally wrote: <foot step regions: 1, y, z> ??
If you just set one region, you do: <foot step regions: 1>, if more than one region will do footsteps, than you add more region ids like:
<foot step regions: 1, 2, 3> (for region ids 1, 2 and 3)
If the map notetag isn't set correctly, the actor notetag won't do much.
Hope that help.
For further support, I suggest you go to the rpg maker web forum or join my discord.
Regards