> For the complete documentation index, see [llms.txt](https://docs.mixeffect.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mixeffect.app/automate/shortcuts/actions/set-flying-key-frame-rate.md).

# Set Flying Key Rate

### **Parameters**

* **Rate**: The number of frames for the transition from 1-250.
* **Index**: The 1-based USK index for the keyer.
* **Mix Effect Block Index**: The Mix Effect Block to change. Default is M/E 1.

### **Returns**

Nothing