Many thanks!
In fact, I asked the wrong question. I’m using Github action for Slack notification and I’d like to use the job status for setting Slack notification color. I don’t like to idea using separate steps for each job status, i.e. for success(), failure(), and so on.
I’m trying to use an expression for setting color param; without success so far.

 with:
      color: ${{ env.STATUS }} == 'success' && 'good' || 'bad'

Tried “color: failure() && ‘good’ || ‘bad’” and other variations - the same result.

I figured it out - as usually RTFM helps.
Thank you again.

color: ${{ job.status == ‘success’ && ‘good’ || ‘bad’ }}