Powershell Commands for Visual Studio Team Services (VSTS, AKA VSO)

For instance you can set a variable like this:

Examples:

##vsotask.setvariable variable=testvar;]testvalue
##vso[task.setvariable variable=testvar;issecret=true;]testvalue

in powershell:

Write-Host "##vso[task.setvariable variable=testvar;]testvalue"

Here’s the complete list:

https://github.com/Microsoft/vsts-tasks/blob/master/docs/authoring/commands.md

Happy scripting!