How to Use Function or Method in Xcode for noob

So yeah, I spend a well 20 minute just to learn how to use function or method with parameter

step1: build your function
 -(void)playerdonate:(int) x: (int) y

{

}

step2: use your function

[self playerdonate:50 :100];

So there you go, step 1 you build your function with two parameter x and y, void mean return nothing

then on step 2, you use your function with input 50 and 100 as x and y