> For the complete documentation index, see [llms.txt](https://docs.pentaho.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pentaho.com/pdia-data-integration/9.3-data-integration/pdi-transformation-steps-reference-overview/single-threader/options-single-threader/parameters-tab.md).

# Parameters tab

![Parameters tab in Single Threader](/files/u6sZGIJoUCG6nSeXznEL)

Enter the following information to pass parameters to the transformation:

| Option                                          | Description                                                                                                                                                                                                                                                                                                                                                                                                                 |
| ----------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Pass parameter values to sub transformation** | Pass all parameters of the transformation down to the sub-transformation.                                                                                                                                                                                                                                                                                                                                                   |
| **Parameter name**                              | Specify the parameter name passed to the sub-transformation.                                                                                                                                                                                                                                                                                                                                                                |
| **Fixed value**                                 | <p>Specify sub-transformation parameter values through one of the following actions:</p><ul><li>Enter a value manually (<code>Sub transformation</code>, for example).</li><li>Use a parameter to set the value (<strong>${Internal.Job.Name}</strong>, for example).</li><li>Use a combination of manually specified values and parameter values (<code>${FILE\_PREFIX}\_${FILE\_DATE}.txt</code>, for example).</li></ul> |
| Get Parameters                                  | Get the existing parameters associated with the sub-transformation.                                                                                                                                                                                                                                                                                                                                                         |


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