I’m creating a YAML release script for Azure DevOps.
I’m still testing how to differentiate between a manual trigger/other pipeline trigger and a trigger coming from a webhook and how to conditionally execute some other logic (f.e. different approvals, …).

Currently I have the following YAML:

trigger: none
resources:
  pipelines:
  - pipeline: buildPipeline
    source: 'POC - Build'
    trigger:
      branches:
        include:
        - develop
  webhooks:
    - webhook: Trigger
      connection: Connection
      filters:
        - path: ReleaseName
          value: Plugins

variables:
  - name: isAutomatedTrigger
    value: $[
              and(
                eq(variables['Build.reason'], 'ResourceTrigger'),
                eq(variables['resources.triggeringAlias'], 'KristaDeploymentTrigger')
              )
            ]

stages:
  - stage: Test
    jobs:
    - job:
      steps:
      - checkout: none
      - ${{if eq(variables.isAutomatedTrigger, True)}}:
        - script: echo 'This is an automated trigger'
      - ${{else}}:
        - script: echo 'This is not an automated trigger'

When I execute the script starting it manually in DevOps, DevOps shows me the ‘isAutomatedTrigger’ parameter evaluates to False.
When i start the script using the webhook, DevOps shows me the parameter evaluaties to true.

However in both situations the text ‘This is not an automated trigger’ is printed.

I tried different spellings of True, true, ‘True’, …

I tried not using the eq (just if(variables.isAutomatedTrigger), … but nothing helps.
I also tried the different variable notation: variables[‘isAutomatedTrigger’].

Sometimes the result switches: both the manual and webhook trigger of the pipeline result in ‘This is an automated trigger’ but never do they behave like intended, even if the parameter always evalaates correctly