how i can design a math quiz in nao choregraphe, give hints if wrong answer

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hello i need some assistance please take it as a help. i want to design a math quiz in nao choregraphe

nao ask human math question suppose addition of 3+2=? we can easily set it by say box. 2.then human answer... 3.by speech recognition box with switch box it can match and it say correct or wrong. 4.but how can nao give hints if answer is wrong like answer is less than or more than what user already given..? means compare box needed to give user hints? nao must help to find out exact answer by saying less or more than your given answer... is it possible in nao choregraphe if you help i would be grateful and please send me the crg file