Hardrock
This command checks the scud status (Non-integral values are used to indicate transition between states). To make the scud be upright, launch or cancel launch you need to use actions.
scud1 action ["scudLaunch", scud1]; // rise the missile
scud1 action ["scudStart", scud1]; // launch the missile
scud1 action ["scudCancel", scud1]; // down the missile
(Make sure either the scud launcher has a crew inside or you use the game logic to perform actions).