> 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/modified-java-script-value/java-script-pane/script-types.md).

# Script types

![Modified Java Script Value step Script Types dialog](https://3411831820-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FAYwCj9fPr1B2pjC11IOQ%2Fuploads%2Fgit-blob-1513e96fbd63bebc20ca45708824cc38ae114e20%2FPDI_TransStep_Modified_Java_Script_Value_Script_Types.png?alt=media)

You can right-click a tab in the Java script pane to open a context menu with the following commands:

* `Add new`: Add a new script tab.
* `Add copy`: Add a copy of the existing script in a new tab.
* `Set Transform Script`: Specify the script to execute for each incoming row. Only one tab can be set as a transform script. The first tab is a transform script by default.
* `Set Start Script`: Specify the script to execute before processing the first row.
* `Set End Script`: Specify the script to execute after the last row has been processed.
* `Remove Script Type`: Specify to not execute the script. The script tab is not removed. To remove a script tab, click the **Close** (X) button and choose **Yes** to delete the script tab.

The icon for the script type displays on the tab to denote the type of script on the tab. To rename a script tab, right-click the tab name in the **Transform Scripts** section of the **Java script functions** pane, choose **Rename**, and enter the new name.


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