[Request] Tunnel from prison to the left the prison

i was trying to use codewalker but im not familiar whit the proglam so if someone knows how to use it, would be awesome if someone could make a ‘‘priso escape’’ tunnel from inside of prison to the small building on the left of the prison like on the pic bellow

, propably a good tunnel to be used as would be the doomsday bunker tunel.
if someone knows how to use this program and wants to do this. it would be greatly apriciated

You can add things from codewalker but you cannot remove or modify existing things on the GTA static world …That would require you to use 3Dmax(i think its called) programs to do it.