You are a pickpocket, your job is to rob players.
As a pickpocket you can rob a player using the rob command while standing near to a player
Every time you will rob a different amount of money from a player (depends on how much they have in their pocket)
If you rob a player they will be able to place a hit on you so a hitman could kill you or they can personally hunt you down and kill you and the police can also come for you since you gain a wanted level every time you rob someone. You can store the robbed money in your bank account or in your backpack so you don't lose it when you die.