cocos2d Move Sprite using buttons [closed]

Question

Using CCMenu I have create Two Buttons Up and Down Here is the code

CCSprite *normlUp = [CCSprite spriteWithFile:@"Up.png"];
CCSprite *selectedUp = [CCSprite spriteWithFile:@"Up.png"];
selectedUp.color = ccGREEN;

CCMenuItemSprite *up = [CCMenuItemSprite itemFromNormalSprite:normlUp selectedSprite:selectedUp target:self selector:@selector(upItemTouched)];
up.position = CGPointMake(-220, -115);

CCSprite *normlDown = [CCSprite spriteWithFile:@"Down.jpeg"];
CCSprite *selectedDown = [CCSprite spriteWithFile:@"Down.jpeg"];
selectedDown.color = ccGREEN;

CCMenuItemSprite *down = [CCMenuItemSprite itemFromNormalSprite:normlDown selectedSprite:selectedDown target:self selector:@selector(downItemTouched)];
down.position = CGPointMake(-220,-140 );

CCMenu *upDown = [CCMenu menuWithItems:up,down,nil];
[self addChild:upDown z:4];

How to write upItemTouched and downItemTouched Methods
Also the sprite should move smoothly on the screen along y-axis
I am New to cocos2d so please accept my simple questions........