The History button is available for scripts configured to Retain VB Script History in the Settings dialog. The History allows you to revert the script to a previous version, to undo any edits that have happened since that version.
A script without a History can be configured for versioning by selecting the Settings button in the VB Scripts dialog and selecting the Retain VB Script History check box.
Once the Retain VB Script History option is enabled, it cannot be disabled. Since VB Scripts are saved as rows in the OnBase database, selecting this option will add a new row for each saved version of the script. Before selecting this option, the effects of retaining multiple scripts with multiple versions should be considered in regard to database size.
To roll back a script to a previous version: