JSON parameter and Bicep array - can't match them to work

[wi5nia]

Hi,

I'm using the newest version of bicep.

This bicep is being deployed within a GitHub Action. The action has a manual dispatch which takes a json structure as an input argument

on:
  workflow_dispatch:
    inputs:
      json_arguments:
        description: 'JSON object with all parameters for the workflow'
        type: string
        default: '{}'
        required: true

In that JSON structure I have one parameter which is an array:

{
    "dataDisksArray": [
        {
            "diskType":"Standard_LRS",
            "lun":0,
            "size":64
        },
        {
            "diskType":"Standard_LRS",
            "lun":1,
            "size":128
        },
        {
            "diskType":"Standard_LRS",
            "lun":2,
            "size":64
        }
    ]
}

There are more parameters in there but just showing one for simplicity.

In my bicep I have a parameter defined as such

param dataDisksArray array

And now using Azure CLI in another step in the GitHub Action I deploy want to deploy my template

$deploy = az deployment sub create `
            --name infra-deploy `
            --location westeurope `
            --template-file main.bicep `
            --query properties.outputs `
            --parameters `
            dataDisksArray="${{ toJson(fromJson(inputs.json_arguments).dataDisksArray) }}"

And no matter how I read, format the reading of dataDiskArray from the JSON structure, I always get this error.

For testing purposes I read even the parameter earlier

Write-Host "Data Disks Array: ${{ toJson(fromJson(inputs.json_arguments).dataDisksArray) }}"

And get a correct reading:

Any suggestion are welcomed and appreciated!

[jeskew]

The error message ("Expecting value: line 1 column 2") makes me think that the shell in use is only reading the first line of the JSON value. Can the toJson method used in the GH action output compressed JSON (without any newlines)?

[wi5nia]

As I showed with this command and it's result it read the whole thing without a problem

Write-Host "Data Disks Array: ${{ toJson(fromJson(inputs.json_arguments).dataDisksArray) }}"

It's the same command used later in the deployment parameter.

I've also tried compressing the JSON and exactly the same thing happens :(