Complex repeat

Configuration
1

Hello,
I have to create a script with a repeat.
In the repeat 4 things are done.
However, one of these is longer than the others and slows down the “sequential” times of the script.
I thought I’d do something equivalent to this

repeat: 20
    Action1
    Action2
    Action3
    if repeatCount%2=0 then do Action4

i.e. perform Action4 once yes and once no (module 2 but I could think of using module 3 or 4 depending on the purpose)
Is there a similar function on HA? Or how can I simulate it?
my current script is

- repeat:
      count: '20'
      sequence:
      - data: {}
        entity_id: switch.sonoff_XXXXXXXXXX
        service: switch.toggle
      - entity_id: switch.sonoff_YYYYYYYYY
        service: switch.toggle
      - device_id: XYZXYZXYZ
        domain: switch
        entity_id: switch.test_mss210r_main_channel
        type: toggle
      - service: notify.alexa_media_echo_dot
        data:
          message: MESSAGE TO SPEAK
          title: Title of message
          data:
            type: announce
            method: spoken
          target: media_player.alexa

Can anyone help me to add condition to action 4, or use more complex counter, or… thell me best way!
Thanx

2

Could have done it with the choose option but templates are neater:

- repeat:
      count: '20'
      sequence:
      - data: {}
        entity_id: switch.sonoff_XXXXXXXXXX
        service: switch.toggle
      - entity_id: switch.sonoff_YYYYYYYYY
        service: switch.toggle
      - device_id: XYZXYZXYZ
        domain: switch
        entity_id: switch.test_mss210r_main_channel
        type: toggle
      - condition: template
        value_template: "{{ count|int % 2 == 0 }}"
      - service: notify.alexa_media_echo_dot
        data:
          message: MESSAGE TO SPEAK
          title: Title of message
          data:
            type: announce
            method: spoken
          target: media_player.alexa
3

That’s exactly what I meant.
However it doesn’t work: to simplify I reduced 6 reps and 2 actions.
The first call is done 6 times, the second, after the condition, never.

4

the variable is repeat.index

- repeat:
      count: '20'
      sequence:
      - data: {}
        entity_id: switch.sonoff_XXXXXXXXXX
        service: switch.toggle
      - entity_id: switch.sonoff_YYYYYYYYY
        service: switch.toggle
      - device_id: XYZXYZXYZ
        domain: switch
        entity_id: switch.test_mss210r_main_channel
        type: toggle
      - condition: template
        value_template: "{{ repeat.index % 2 == 0 }}"
      - service: notify.alexa_media_echo_dot
        data:
          message: MESSAGE TO SPEAK
          title: Title of message
          data:
            type: announce
            method: spoken
          target: media_player.alexa
5

still not work…

Could this be an indentation error?
alexa