azure pipeline condition always returns false - azure

Question

I am trying to check if my stage-specific variable sourceCodeChanged is equal to true.
If it is true then the stage should be executed, else it should be skipped.
I can do this by using a condition and comparing sourceCodeChanged with true. this however is not working for me. what am I doing wrong?
This is a snippet out of my azure-pipelines.yml:
- stage: build
dependsOn: determineChanges
variables:
sourceCodeChanged: stageDependencies.determineChanges.checkChanges.outputs['check_changes.SOURCE_CODE_CHANGED']
condition: and(succeeded(), eq(variables.sourceCodeChanged, 'true'))
jobs:
- job: buildBinaries
displayName: Build Binaries
steps:
- bash: echo $(sourceCodechanged)
displayName: TestOutPutDeleteMe #debugging step
I implemented a debugging step called TestOutPutDeleteMe. when the step TestOutPutDeleteMe gets executed it prints out true, so that means the value gets correctly assigned to sourceCodeChanged.
If I try to use the variable sourceCodeChanged in the eq() function it always assigns false to the condition and skips all the steps in the stage.

Answer 1

azure pipeline condition always returns false
That because you are using the condition on the stage level. Please try to using following condition:
- stage: build
dependsOn: determineChanges
condition: eq(Dependencies.determineChanges.outputs['checkChanges.check_changes.SOURCE_CODE_CHANGED'], 'true')
Please note that we need update the stages refer from stageDependencies.stageName.jobName.outputs['stepName.variableName'] To Dependencies.stageName.outputs['jobName.stepName.variableName']
And not use the variable for the value Dependencies.determineChanges.outputs['checkChanges.check_changes.SOURCE_CODE_CHANGED']
My test result:
stages:
- stage: stageA
jobs:
- job: A
pool:
name: Default
steps:
- task: PowerShell#2
displayName: "create a variable"
inputs:
targetType: 'inline'
script: |
Write-Host "##vso[task.setvariable variable=CustomVar;isOutput=true]true"
name: CustomVariable
- stage: stageB
dependsOn: stageA
condition: eq(Dependencies.stageA.outputs['A.CustomVariable.CustomVar'], 'true')
jobs:
- job: A
pool:
name: Default
steps:
- task: PowerShell#2
displayName: "output the variable"
inputs:
targetType: 'inline'
script: |
Write-Host "hello world"