progress time bar in cocos2d disappers after restart game - cocos2d-iphone

Question

I've created a quiz game, that implements a time bar. In the first play it's all right, but if, after gameover, the player tap "restart", the game goes on properly, but the time bar disappears!
Here my code from GameOverLayer to Game:
-(void) restart {
[[CCDirector sharedDirector] replaceScene:[HelloWorldLayer node]];
}
Here the function to create a new question
-(void)creaDomanda{
//bar
CCProgressFromTo *to1 = [CCProgressFromTo actionWithDuration:MaxTime from:100 to:0];
bar = [CCProgressTimer progressWithFile:#"barra.png"];
bar.type = kCCProgressTimerTypeHorizontalBarLR;
[bar setPosition:ccp(size.width - 250 , size.height - 18)];
int randomValue = (arc4random() % 4) + 1;
NSString *stringa = [NSString stringWithFormat:#"Domanda%i", randomValue];
dictionary = [plistData objectForKey:stringa];
domanda = [dictionary valueForKey:#"Titolo"];
labelDomanda = [CCLabelTTF labelWithString:domanda fontName:#"Marker Felt" fontSize:24];
labelDomanda.position = ccp( size.width /2 , 400 );
[self addChild: labelDomanda];
int rispostaEsatta = [[dictionary valueForKey:#"Soluzione"] intValue];
menu = [CCMenu menuWithItems:nil];
for (int i = 1; i<5;i++)
{
if(rispostaEsatta == i){
item = [CCMenuItemFont itemFromString:[dictionary valueForKey:
[NSString stringWithFormat:#"Risposta%i",i] ]
target:self selector:#selector(corretto)];
}else{
item = [CCMenuItemFont itemFromString:[dictionary valueForKey:
[NSString stringWithFormat:#"Risposta%i",i] ]
target:self selector:#selector(sbagliato)];
}
[menu addChild:item];
}
//[..]
[self addChild:menu];
[self addChild:bar];
[bar runAction:to1];
}
And here one of the correct/wrong method (similar) that after all, create a new question:
-(void)sbagliato{
CCLOG(#"Sbagliato");
if (menu) [self removeChild:menu cleanup:YES];
if (labelDomanda) [self removeChild:labelDomanda cleanup:YES];
if (bar) [self removeChild:bar cleanup:YES];
labelRisultato = [CCLabelTTF labelWithString:#"Hai sbagliato!" fontName:#"Marker Felt" fontSize:24];
[labelRisultato setColor:ccc3(255, 1, 1)];
labelRisultato.position = ccp(size.width / 2, 280);
[self addChild:labelRisultato];
[self gameOver:2 punteggio:0];
// Richiamiamo il metodo per eliminare la label dopo 0,3 secondi
[self performSelector:#selector(eliminaLabel) withObject:nil afterDelay:0.5];
increment = increment - 20;
[pointLabel setString: [NSString stringWithFormat: #"Punti: %i", increment]];
// new question
[self performSelector:#selector(creaDomanda) withObject:nil afterDelay:0.5];
}
Can anyone explain to me please why when I restart the time bar desappers?
Thank You

Answer 1

My best guess:
The CCProgressFromTo action is still running. Since it progresses down to 0, the CCProgressTimer eventually doesn't display any part of it anymore. This may continue even if you run another CCProgressFromTo action on the progress timer.
Solution: be sure to stop any running CCProgressFromTo actions before running another.
If that doesn't fix it, then I imagine the CCProgressTimer needs to be reset by setting percentage back to 100.