Basically, I have a yaml config file, where I want to declare env variables. My PS Script, is supposed to read these and declare them inside a function.

so I have something like:

config.yaml:

env:
 var1: "hello"
 var2: "world"
step:
script:
 - Write-Host "$env:var1, $env:var2"

script.ps1 (abbreviated)

$config =  ConvertFrom-Yaml (Get-Content $yamlFilePath -Raw)

$session = New-PSSession -ComputerName $remoteHost -Credential $creds

foreach($key in $config.env.Keys){

    Invoke-Command -Session $Session -ScriptBlock {
        param (
            [string]$Name,
            [string]$Value
        )

        
        Set-Item -Path "env:$Name" -Value $Value
    } -ArgumentList $key, $config.env[$key]
}

The user is also supposed to be able to provide a script to be run on the remote host. This script must be able to access the variables I defined in the session.

Which I do like this:

$lines = $config.script
foreach($line in $lines){
    Invoke-Command -Session $session -ScriptBlock {
         param([string]$Line)
         Invoke-Expression $Line
    } -ArgumentList $line
 }

My problem is, that the $Line isn’t being evaluated correctly. What ends up executing on the remote host is the line as is: Write-Host “$env:var1, $env:var2” instead of “Write-Host “Hello, World”.

Is there a way to do this? Or should I look into alternative ways to go about it?