Custom TFS Enviroment Variable doesn't read $(Date)

Question

I want to use a custom tfs variable like this:

MergedVersion: $(BuildVersion.Major).$(BuildVersion.Minor).$(Date:yy)$(DayOfYear)$(Rev:.r)

My pro

Answer 1

Use following script in a PowerShell Task in your build definition

$date=$(Get-Date -Format 'yy');
Write-Host "##vso[task.setvariable variable=Today]$date"

Then you can use $(Today) in your subsequent build tasks. However, usage like $(Today:yy) with format is not possible as it is supported only in build number format.