Need someone to write a few lines of code for me for an iphone app

Hello, I am working on a game for iOS. I know what I am doing and am almost finishing up the game. I am just stuck on a certain part of the game. I need to create a black hole in the app which attracts all the projectiles in the screen. I just need someone to set up this code for me. I do not need you to write the entire application. Just this part of the code. This should only take about an hour or two at most. I pay hourly. I am using the spritekit frame work.