How to retrieve a variable value from a script block (job)

Question

I'm trying to get the value of a variable modified inside a scriptblock:

function Test-Function {
    $var = "apple"
    Start-Job -ScriptBlock {
        $var = "banana"
    }
    Write-Host "Variable is $var"
}
Test-Function
Variable is: apple

I am trying to get the output 'banana'. Is this possible?

Possible duplicate of [Variable scoping in PowerShell](https://stackoverflow.com/questions/9325569/variable-scoping-in-powershell) — I.T Delinquent, Sep 18 '19 at 09:58

score 4 · Accepted Answer · answered Sep 18 '19 at 10:07

Since you are using PS Jobs in your code, you need to use wait for the job to get completed using wait-job and finally you have to receive the job using receive-job. Replace your code with the below:

function Test-Function {
    $var = "apple"
    Start-Job -ScriptBlock {
        $var = "banana"
        Write-Host "Variable is $var"
    } | Wait-Job -Any |Receive-Job

    #Write-Host "Variable is $var"
}
Test-Function

Hope it helps.

How to retrieve a variable value from a script block (job)

1 Answers1