First set creative mode.creative
Next lets build an exit down.build exit d
Now lets make the grill an exit.build grill.exit
... and have it control the exit down.grill.controls n
Let's make our description dynamic reflecting the changes to the grill as it happens.room description is Before you towers a solid gate of steel, beneath and to the side a grill lies %grillstatus%
We need to make grillstatus a variable. Let's make it a local.lgrillstatus=closed
We also need to update our status variable.
grill.if opened lgrillstatus=open
grill.if closed lgrillstatus=closed
Now when you open / close the grill it will be reflected in the description as the special commands for the room name & description remain and only get processed when they are rendered.
This will also be live in the next update... coming shortly!