Passing Environment Variables to Reusable Workflows in GitHub Actions

 We have discueed, that we have to use an environment variable to handle input parameter default values, if we are using trigger for workflow on push in the post "Setting Workflow Environment Variable Based on Input Parameter in GitHub Actions - on workflow_dispatch and Use a Default Value on push". If we have to pass on the input paramter value from a workflow to a reusable workflow, it does not work as expected and it is a limitation of reusable workflows  as explained in here. Let's try to understand with an example how to pass an env variable to a reusable workflow.