I needed to convert my code to ARC. I have an NSArray that I use to draw a path. I fill the objects of NSArray values from a different class.

Problem is after converting to ARC, NSArray returns always null

I can not see what I am doing wrong.

bug.h

@interface Ladybug : CCSprite <CCTargetedTouchDelegate>{

    CCArray *linePathPosition;
}
@property (nonatomic, strong) CCArray *linePathPosition;

@end

bug.m

@synthesize linePathPosition;

-(id) init
{
    if( (self=[super init] )) {
        self.linePathPosition = [[CCArray alloc] init];

    }
    return self;
}
-(void) updatePosition:(CGPoint) position
{
    [self.linePathPosition addObject:[NSValue valueWithCGPoint:position]];
    NSLog(@"line path %@",linePathPosition);
}
-(void) breakMoveLadyBug
{
    [self.linePathPosition removeAllObjects];
}

In main .m

- (void)ccTouchMoved:(UITouch *)touch withEvent:(UIEvent *)event
{
    Ladybug *ladybug1 = (Ladybug *)[self getChildByTag:99];
    CCMotionStreak* streak = (CCMotionStreak *)[self getChildByTag:999];
    CGPoint touchLocation = [touch locationInView: [touch view]];
    CGPoint curPosition = [[CCDirector sharedDirector] convertToGL:touchLocation];

    if (ladybug1.isSelected) {

        streak.position = curPosition;
        [ladybug1 updatePosition:curPosition];
                NSLog(@"Cur position %@",NSStringFromCGPoint(curPosition));

        if (!ladybug1.isMoving) {

            [ladybug1 startMoveLadyBug];
        }
    }
}

Log:

 Cur position {331, 110}
 line path (null)

What am I doing wrong? What is the proper way to define and init NSArray with ARC?