How can I use 'or' condition in variables block in AzureDevops?

Question

I'm trying to set the value of a var1 if mode is not dev or variable var2 has the value true

  - name: var1
    value: $[or(eq(variables['var2'], true), ne(variables['Mode'], 'dev'))]

But when I run the pipeline, I see that the variable takes the value false

  var2:
    Parsing expression: <or(eq(variables['var2'], true), ne(variables['Mode'], 'dev'))>
    Evaluating: or(eq(variables['var2'], True), ne(variables['Mode'], 'dev'))
    Expanded: or(eq('$[or(eq(variables[''var2''], true), ne(variables[''Mode''], ''dev''))]', True), ne('dev', 'dev'))
    Result: 'False'

What I did wrong?

Answer 1

I tested this:

variables:
- group: Some-secrets
- name: Mode
  value: prod
- name: var2
  value: true
- name: var1
  value: $[or(eq(variables['var2'], true), ne(variables['Mode'], 'dev'))]


pool:
  vmImage: ubuntu-latest

steps:
- script: env | sort
  displayName: 'Display env variables'

- script: |
    echo "$(var1)"
    echo "$(var2)"

and it was evaluated properly:

  var1:
    Parsing expression: <or(eq(variables['var2'], true), ne(variables['Mode'], 'dev'))>
    Evaluating: or(eq(variables['var2'], True), ne(variables['Mode'], 'dev'))
    Expanded: or(eq('true', True), ne(variables['Mode'], 'dev'))
    Result: 'True'

Could you share you full pipeline?