Azure DevOps Azure PowerShell task output variable

Question

I'm creating a release pipeline using one Azure PowerShell Task and PowerShell task. In the the Azure Powershell Task, I have the following code

$groupInfos = @()
for ([int]$i = 0; $i -lt $azureADGroupsObj.Count)
{
    $groupInfo = New-Object PSObject
    $groupInfo | Add-Member -MemberType NoteProperty -Name "displayName" -Value $azureADGroupsObj[$i].DisplayName
    $groupInfo | Add-Member -MemberType NoteProperty -Name "Id" -Value 
    $azureADGroupsObj[$i].Id
    $groupInfos += $groupInfo
    $i++
}
return $groupInfos
Write-Host "##vso[task.setvariable variable=azureADGroups;]$groupInfos"

I am trying to store $groupInfos into azureADGroups variable here.

but when I run a PowerShell task in the next step under same job, it says the term "azureADGroup" is not recognized.. seems like the variable wasn't set..does anyone know what am I missing here?

i think you need to change it to Write-Host $env:azureADGroups — 4c74356b41
– 4c74356b41, Commented Jul 11, 2019 at 7:14

Jack Jia · Accepted Answer · 2019-07-14 09:41:56Z

14

I found 3 problems in your script:

You do not need to set the reference name.
There is a return before the write variable command. So, the write variable command will not be executed.
The write variable command can only use single-line string. However, the $groupInfos is an object. It will not be implicitly converted to a string. You need to use "ConvertTo-Json -Compress" command to convert it to a string.

I tested at my pipeline:

$groupInfosString = $groupInfos | ConvertTo-Json -Compress
write-host $groupInfos
write-host $groupInfosString 
Write-Host "##vso[task.setvariable variable=azureADGroups;]$groupInfos"
Write-Host "##vso[task.setvariable variable=azureADGroupsFromString;]$groupInfosString "

From the debug log, we can check that variable "azureADGroupsFromString" is successfully set.

Update:

You can use the following script in next PS task:

$objs = '$(azureADGroupsFromString)' | ConvertFrom-Json
foreach( $obj in $objs){
    Write-Host ("displayName:{0} Id:{1}" -f $obj.displayName, $obj.Id)
}

Output:

Update:

If you want to pass it to next PS task via arguments, please enclose the variable in single quotes. In this way, it will be considered as a string.

edited Jul 14, 2019 at 9:41

answered Jul 11, 2019 at 1:43

Jack Jia

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5 Comments

wonderfulworldwithcharity Over a year ago

Hi Jack, thanks for your help so far so good. If I want to pass in the azureADGroupsFromString to the next PS task, should I pass in as string or json object type? I got an error

Jack Jia Over a year ago

@wonderfulworldwithcharity You need t o pass it as a string. Because the environment variable can only be a single-line string.

Jack Jia Over a year ago

@wonderfulworldwithcharity And it is easy to utilize the string, just use ConvertFrom-Json, you will get a PSObject.

wonderfulworldwithcharity Over a year ago

when I use inline script it works fine but I'm actually passing it to a script, it seems like it's not taking it as a string or something, I've uploaded more screenshots

Jack Jia Over a year ago

@wonderfulworldwithcharity Enclose variables in single quotes ('), this may help.

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