> ## Documentation Index
> Fetch the complete documentation index at: https://docs.aseeflow.org/llms.txt
> Use this file to discover all available pages before exploring further.

# FEEL Engine Legacy Behavior

If you don't want to migrate your DMN models right now, you can also restore the legacy FEEL
behavior by flipping a config flag:

* To see how this legacy behavior can be enabled again in ASEE Flow, please see the
  [dmnFeelEnableLegacyBehavior][legacy behavior flag] engine configuration property.
* To enable this behavior in a standalone DMN Engine setup, please refer to the `DefaultDmnEngineConfiguration`
  [enableFeelLegacyBehavior][fluent feel flag setter] and [setEnableFeelLegacyBehavior][feel flag setter]
  methods

<Info>
  **Heads Up!**

  By using the legacy FEEL Engine, the ASEE Flow DMN Engine **only** supports `FEEL` for
  [Input Entries](/reference/dmn/decision-table/rule#input-entry-condition) of a decision table – this corresponds to FEEL
  simple unary tests.
</Info>

[Migration Guide]: /update/minor/712-to-713#entirely-replaced-feel-engine

[legacy behavior flag]: /reference/deployment-descriptors/tags/process-engine#dmnFeelEnableLegacyBehavior

[fluent feel flag setter]: https://docs.camunda.org/javadoc/camunda-bpm-platform/7.24/org/camunda/bpm/dmn/engine/impl/DefaultDmnEngineConfiguration.html#enableFeelLegacyBehavior

[feel flag setter]: https://docs.camunda.org/javadoc/camunda-bpm-platform/7.24/org/camunda/bpm/dmn/engine/impl/DefaultDmnEngineConfiguration.html#setEnableFeelLegacyBehavior