Use variables on SLACK_CUSTOM_PAYLOAD field

[jdrcodes]

Hello!

I am trying to make an automation when a user creates a pull request that sends a message to a Slack Channel.

SLACK_CUSTOM_PAYLOAD only admits an string that has to be a JSON, but when I use variables it always returns an 400 error and it does not work, even though the log replaces correctly the variables.

SLACK_CUSTOM_PAYLOAD: | { "author": "${{ steps.set-payload.outputs.PAYLOAD_AUTHOR }}", "ticket_link": "Example text", "pr_link": "Example text", "description": "Example text", "title": "Example text" }

Log:

SLACK_CUSTOM_PAYLOAD: { "author": "jdrcodes", "ticket_link": "Example text", "pr_link": "Example text", "description": "Example text", "title": "Example text" }

Any ideas?

Error sending message: Error on message: 400 Bad Request