How to replace hardcoded value in pipeline.yaml which is running under buildkite tool

Question

I have a use case where I need to run the same pipeline but with a different environment variable, Like dev/qa/stage/prod.

I tried to use an environment variable to make the changes at the run time but not succeeded

pipeline.yaml

steps:
  - label: ":wrench: Run ui tests on dev"
    command: "docker run --rm -e INSTANCE=${dev} gcr.io/xyz/tests:${BUILDKITE_COMMIT:0:7}"
  - wait

How I am passing the env value.

Please help me to solve this.