1. Open the editor, and enable revives in multiplayer options
2. Label the player unit's variable something like "player1"
3. Create a trigger, and have it activate via Radio Alpha
4. In the trigger's activation field, type "player1 setUnconscious false;"
5. Start the scenario.
6. Enter the incapacitated state.
7. Activate Radio Alpha.
You will see that the player is absolutely incapable of getting up at all.