2 questions about conditional Card

          - type: conditional
            conditions:
              - condition: "numeric_state"
                below: 20
              - entity: input_number.keuken_vaatwas_ingevenaantalblokjes
            card:
              type: custom:stack-in-card
              keep:
                margin: false
                box_shadow: false
                background: false
              cards:              
                - type: custom:numberbox-card
                  entity: input_number.keuken_vaatwas_ingevenaantalblokjes
                  icon: false
                  picture: false
                  border: false
                  name: false

  1. what is wrong with this code ? the card gives me an error
  2. can I have delay in disappearing the card ?
      - type: conditional
        conditions:
        - condition: numeric_state
          entity: input_number.keuken_vaatwas_ingevenaantalblokjes
          below: 20
        card:
  1. made an extra input_number. made an automation, when the first input number changes, it waits x seconds, and writes the first value to the second. Then I use the second instead of the first