title: Declaring variables in GitLab CI yml file
body: <p>I'm using value and description keywords in the variables section to create prefilled custom variables for when the pipeline runs manually. I'd also like to set some environment variables without exposing them as prefilled variables, but I keep seeing syntax errors if I try to do this:</p>
  <p>variables:
  foo: &quot;some value&quot;
  bar:
  value: &quot;test&quot;
  description: &quot;Enter something&quot;</p>
  <p>Is it not possible to mix declarations of custom prefilled variables and variables that aren't exposed? If so, what's the best way of working around this?</p>