Azure Devops Pipeline - Job Display Name Based on Matrix

Hey I am looking for a way to dynamically build the displayName on a Azure Devops pipeline. This is my current setup:

jobs:
- job: RunTests
  displayName: 'Run Tests on $(vmImage)'
  timeoutInMinutes: 60
  strategy:
    matrix:
      windows:
        vmImage: 'windows-latest'
      mac:
        vmImage: 'macos-latest'
  pool:
    vmImage: $(vmImage)
  steps:
    - ...

When looking in the UI, I would like to have it so that the Job Name displays what image it is using for the agent. Currently the $(vmImage) variable is not getting filled in

To achieve that you need to use ${{ variables.vmImage }} because it is set at compilation time. More info https://learn.microsoft.com/en-us/azure/devops/pipelines/process/variables?view=azure-devops&tabs=yaml%2Cbatch

jobs:
- job: RunTests
  displayName: 'Run Tests on ${{ variables.vmImage }}'
  timeoutInMinutes: 60
  strategy:
    matrix:
      windows:
        vmImage: 'windows-latest'
      mac:
        vmImage: 'macos-latest'
  pool:
    vmImage: $(vmImage)
  steps: