> 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/osc/messages/upstream-keyers/flying-key-run.md).

# Flying Key Run

| Message                         | Description                                                                   | Arguments |
| ------------------------------- | ----------------------------------------------------------------------------- | --------- |
| `/mixeffect/usk/flying-key/run` | Execute the Flying Key for the specified USK on the selected Mix Effects Bus. | Multiple  |

| Argument | Type    | Description                                                                                                                                                                                                                          |
| -------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Type     | Integer | <p>0 = A<br>1 = B<br>2 = Full<br>3 = Center of Key<br>4 = Top Left<br>5 = Top Middle<br>6 = Top Right<br>7 = Middle Left<br>8 = Middle Center<br>9 = Middle Right<br>10 = Bottom Left<br>11 = Bottom Middle<br>12 = Bottom Right</p> |
| USK      | Integer | One-based index of the Upstream Keyer. Default is 1.                                                                                                                                                                                 |
| M/E      | Integer | One-based index of the Mix Effect Bus. Default is 1.                                                                                                                                                                                 |