I have a NSMutablearray wich contain NSArrays(each array contain int and String values).
When i try to retrieve and display the data from the first array:
That was ok with the int value, it was displayed correctly.

```
    NSLog(@"%i",[[[lesQuestions objectAtIndex:0] objectAtIndex:0] intValue]);

```

But when i try to display the String value:

```
    NSLog(@"%@",[[[lesQuestions objectAtIndex:0] objectAtIndex:1] stringValue]);

```

I got exception:

```
Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFString stringValue]: unrecognized selector sent to instance

```

I am definitely sure that the int value is the first item (index 0) and the String value is the second (index 1).
When i log the MutableArray which holds the NSArrays, i got the values correctly, so the problem is on the reference of the item i guess.