Nobody is going to give you everything you need here for free. Executors are extremely hard to find and unless you know how to code one, be prepared to shell out a bit of money.
Do some looking around, there are plenty of coding tutorials here in both C# and C++
Douggem has a GameState::Execute source code which can be used to execute scripts, if modified correctly.
Just do some looking around, there are plenty of resources around. Asking for help like this is only going to get you flamed in the long run.