SKAction not working properly - ios

Question

I have a sequence of SKActions that I would like to play but they do not play properly. The eye only closes and never opens again. I have no clue why this is occurring but maybe you do! Help is appreciated, thank you.
-(void)blink {
SKAction *delay = [SKAction waitForDuration:3];
SKAction *blinkEye = [SKAction resizeToHeight:1 duration:.2];
SKAction *delay2 = [SKAction waitForDuration:.5];
SKAction *openEye = [SKAction resizeToHeight:3 duration:.2];
SKAction *group1 = [SKAction group:#[delay,blinkEye]];
SKAction *group2 = [SKAction group:#[delay2,openEye]];
SKAction *all = [SKAction sequence:#[group1,group2]];
SKAction *repeat = [SKAction repeatActionForever:all];
[self runAction:repeat];
}
In MyScene.m
-(void)update:(CFTimeInterval)currentTime {
/* Called before each frame is rendered */
Player *player = (Player *)[self childNodeWithName:#"player"];
Player *lefteye = (Player *)[player childNodeWithName:#"leye"];
Player *righteye = (Player *)[player childNodeWithName:#"reye"];
[lefteye blink];
[righteye blink];
}

Answer 1

There's no need for grouping, it's causing the problem.
SKAction *delay = [SKAction waitForDuration:3];
SKAction *blinkEye = [SKAction resizeToHeight:1 duration:.2];
SKAction *delay2 = [SKAction waitForDuration:.5];
SKAction *openEye = [SKAction resizeToHeight:3 duration:.2];
SKAction *all = [SKAction sequence:#[delay,blinkEye, delay2,openEye]]];
And letting blink the eye on every frame update can't work. This function is called up to 60 times a second.
Instead do it like this on creation of the eye object:
SKAction *delay = [SKAction waitForDuration:3];
SKAction *blinkEye = [SKAction resizeToHeight:1 duration:.2];
SKAction *delay2 = [SKAction waitForDuration:.5];
SKAction *openEye = [SKAction resizeToHeight:3 duration:.2];
SKAction *all = [SKAction sequence:#[delay,blinkEye, delay2,openEye]]];
//create the lefteye object
lefteye = [[Eye alloc] init...];
//create the righteye object
righteye = [[Eye alloc] init...];
[lefteye repeatActionForever:all];