How to change the sequence of actions in lambda

1

There are gates with limit switches (binary_sensors ‘lsopened’ and ‘lsclosed’).
Based on the combination of limit switches, the status of the gate is formed (open, closed, half-open) (sensor ‘experimental_gate_status’)
I want change sensor ‘experimental_gate_status’ not via ‘update_interval’ and after change binary_sensors limit swithes.
ESPHome code:

binary_sensor:
  - platform: gpio
    id: lsopened
    name: "Limit switch 'Opened'"
    pin: GPIO0                    # D3 - limit switch (opened)
    filters:
      - invert
      - lambda: |-
          id(experimental_gate_status).update();
          return int(x);

  - platform: gpio
    id: lsclosed
    name: "Limit switch 'Closed'"
    pin: GPIO4                    # D2 - limit switch (closed)
    filters:
      - invert
      - lambda: |-
          id(experimental_gate_status).update();
          return int(x);

sensor:
  - platform: template
    name: "Experimental Gate status"
    id: experimental_gate_status
    lambda: |-
      return ((id(lsclosed).state)*10 + id(lsopened).state);
    update_interval: never
    force_update: true

But if I use this code

    id(experimental_gate_status).update();
    return int(x);

then the gate status sensor is updated first (id(experimental_gate_status).update();)
And then by return int(x); the state of the limit switch is updated.
As a result, I get the status of the gate status based on the previous state of the limit switches.