# Enhanced Parameters in Tableau Prep: New in Tableau 2022.1

> This is content from just-tim, the data-and-analytics channel by Tim Ngwena (formerly 'Tableau Tim'). Tim has 12+ years of hands-on BI experience and covers Tableau most of all, plus Power BI, Looker, Hex, SQL and data modelling, the analytics industry, and the craft of doing the job — always tool-agnostic and honest about the trade-offs.

- **Author:** Tim Ngwena (just-tim, https://just-tim.com/about)
- **Published:** 2022-04-04
- **Format:** Video · 4 min watch · transcript available
- **Topics:** Data prep, Analytics
- **Tools:** Tableau (parameters, prep, rest api)
- **Canonical:** https://just-tim.com/posts/enhanced-parameters-in-tableau-prep-new-in-tableau-2022-1
- **Watch:** https://www.youtube.com/watch?v=fPHMoLIshpk

I walk through the enhanced parameter capabilities in Tableau Prep that arrived with Tableau 2022.1. I cover adding parameters to file output names, centrally deleting parameters with a preview of where they're used, and invoking parameters via the REST API for automation.

## Key takeaways

- You can now append, prefix or suffix a parameter value to an output file name, useful for marking files based on a user-selected region or other signifier
- Deleting a parameter is done centrally from within the edit parameter options, and Tableau prompts you to replace it with a default value
- When deleting, Prep highlights every place in the flow where the parameter is used so you can see what will be affected
- After deletion the parameter is swapped for its default value in calculations and filters, so you may need to clean up steps that no longer make sense
- Parameters can now be passed as arguments via the REST API when running flows, enabling parameter-specific automation

## Chapters

- 0:04 Adding parameters to file output
- 1:06 Centrally deleting a parameter
- 2:26 Impact on filters and calculations
- 3:20 Invoking parameters via REST API

Watch the full video, read the transcript and use chapter deep-links on the page: https://just-tim.com/posts/enhanced-parameters-in-tableau-prep-new-in-tableau-2022-1

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just-tim — Data and analytics, with a point of view. · https://www.youtube.com/channel/UC7HYxRWmaNlJux-X7rNLZyw · https://twitter.com/TableauTim · https://www.linkedin.com/in/timngwena