Setup: Rescue ULP is a heist setup featured in Grand Theft 
Auto Online as part of the Doomsday Heist update. It is part of the Act 2 
of The Doomsday Heist. (gta wikia)

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Install
1- Install Map Editor mod
2-Install Open All Interiors
3- Put "RULP" into GTA5 main folder. (Place where GTA5.exe is) 
4- Put "ObjectList & PedList & VehicleList " into scripts folder (Backup Your Files)
5- Press F7
6- Go to Load Map and type RULP