Add new urbasec's zones

For the moment, zones 1, 2, 3 and 15 are available. Would it be possible to add the zones described in the documentation?

Something like the variables.tf file in the EC2 module?

# [...]
variable "security" {
  type        = string
  description = "The urbasec zone of the account"
  validation {
    condition     = var.security == lower(var.security)
    error_message = "The urbasec zone must be in lowercase."
  }
  validation {
    condition     = can(regex("^z[0-2]?[0-9]$", var.security))
    error_message = "The urbasec zone must be in format: zi (^z[0-2]?[0-9]$)."
  }
}