Fix wrong variable referenced for service data for name hold action

[tobias-groeger]

Additional information

• This PR fixes or closes issue: fixes Call-service custom action not working for name action #1340
• This PR is related to issue:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• I have followed the contribution guidelines
  • This PR is for a custom-card or documentation change and therefore directed to the main branch.
  • This PR is for a official card or any other directly to the integration related change and therefore directed to the release branch.