Modbus switch\coil + verify

Configuration
1

Hi,

I want to use “verify:” option for modbus switch:
that is my modbus switch:

  switches:
    - name: vent_2_2fan_out # On-opened, Off-closed
      slave: 10
      address: 1
      write_type: coil

and I want to use “verify” option.
But the problem is that I am not able to read single register (using “read coil”) for verification my switch (why - the device just doesn’t support it).

The device supports reading 8 registers only with the function “read multiple coils” so I use the following :

  binary_sensor
    - name: vent_b_relay5_6_status
      slave: 10
      address: 0
      input_type: coil
      slave_count: 7
      unique_id: vent_b_relay5_6_status
      scan_interval: 10

being read, binary sensor vent_b_relay5_6_status_1 is creating and that’s the exaclty my verification for the switch.

Any idea how to “link” it as verification for my switch?