Issues with adding an array of sprites to the screen in cocos2d? - arrays

Question

for my game in cocos2d, I'm trying to add an array of sprites to the screen that constantly move to the left. When I add the method to my update method, it doesn't work as expected. I first set up a batch node.
- (void)setupBatchNode
{
_batchNode = [CCSpriteBatchNode batchNodeWithFile:#"berries-hd.pvr.ccz"];
[self addChild:_batchNode z:-1];
[[CCSpriteFrameCache sharedSpriteFrameCache]
addSpriteFramesWithFile:#"berries-hd.plist"];
}
-(void)updatePinkBerries:(ccTime)dt
{
CGSize winSize = [CCDirector sharedDirector].winSize; // Is it time to spawn a pink berry?
double curTime = CACurrentMediaTime();
if (curTime > _nextPinkBerrySpawn)
{
// Figure out the next time to spawn an asteroid
float randSecs = randomValueBetween(0.20, 1.0); _nextPinkBerrySpawn = randSecs + curTime;
// Figure out a random Y value to spawn at
float randY = randomValueBetween(0.0, winSize.height);
// Figure out a random amount of time to move from right to left
float randDuration = randomValueBetween(2.0, 10.0);
// Create a new berry sprite
CCSprite *pinkBerry = [CCSprite spriteWithSpriteFrameName:#"testt.png"];
[_batchNode addChild:pinkBerry];
// Set its position to be offscreen to the right
pinkBerry.position = ccp(winSize.width + pinkBerry.contentSize.width/2, randY);
// Move it offscreen to the left, and when it's done, call removeNode
[pinkBerry runAction:
[CCSequence actions:
[CCMoveBy actionWithDuration:randDuration position:ccp(-winSize.width- pinkBerry.contentSize.width, 0)],
[CCCallFuncN actionWithTarget:self selector:#selector(removeNode:)], nil]];
}
}