module Playbook::MaxHeight

def max_height_props
  selected_props = max_height_options.keys.select { |sk| try(sk) }
  return nil unless selected_props.present?
  selected_props.map do |k|
    max_height_value = send(k)
    "max_height_#{max_height_value}" if max_height_values.include? max_height_value.to_s
  end.compact.join(" ")
end