Hello! I'm having some trouble modeling a permission with caveats:

caveat order_filled(order_status string) {
  order_status == "filled"
}

definition user {}

definition order {
  relation filler: user
  relation consumer: user
  relation retriever: order#consumer with order_filled

  permission space_open = filler + retriever
  }

What I'm trying to achieve is having the

order#consumer

have the

space_open

permission when the caveat

order_status = "filled"

is passed in What relationship do I need to create other than

order:test_order#consumer@user:sebastian

such that

space:test_space#open@user:sebastian with { "order_status": "filled" }

passes?