Siri Shortcuts pass arrays

Hello,

I’m using the Beta version and of the mobile app and trying to setup Siri Shortcuts using services. I have a need to pass an array that would result into a json similar to:

turn_back_on:
  - switch.swb1_1
  - switch.swb1_2
turn_on: []
time: 600

The service exports the three fields and I need to pass the data in them and it’s passed as:
For: turn_back_on I pass [switch.swb1_1, switch.swb1_2]
For turn_on I pass []
For time I pass 600

The json that is generated by the app looks like, copied from the events log:

{
    "turn_back_on": "[switch.swb1_1, switch.swb1_2]",
    "turn_on": "[]",
    "time": 600
}

which as you guessed it is incorrect.

Anybody has any work around got this?

Thank you