This is probably a completely stupid question, but i'm pretty new at objective-C and programing in general. i'm trying to make an array of arrays but can't manage to make it work :

@interface ArraysAndDicts : NSObject {
 NSMutableArray * mySimpleArray;
 NSMutableArray * myComplicatedArray;
}

the implementation :

-(void)generateValueForArrayOfArrays {

    [self generateValueForArray]; 
    //this generates an array with 5 elements 'mySimpleArray'

    [myComplicatedArray addObject:mySimpleArray];

    NSMutableArray * mySecondaryArray = [[NSMutableArray alloc] init];
    [mySecondaryArray addObject:@"twoone"];
    [mySecondaryArray addObject:@"twotwo"];

    [myComplicatedArray addObject:mySecondaryArray];

(i edited out all the NSLogs for clarity)

When running my app, the console tells me :

mySecondaryArray count = 2

mySimpleArray count = 5

myComplicatedArraycount = 0

So, i know there are other ways to make multidimensional arrays, but i'd really like to know why this doesn't work. Thank you.