How to translate the sentence into French using an object pronoun? "They tell you (plural form) their ages."?

Should it be "Ils leur disent �ges" or "Ils vous disent �ges" or something else entirely? Because I'm to write the plural form of you (vous) does the object pronoun remain as vous? I'm still trying to comprehend all the rules of using object pronouns and I don't know if I'm translating any of the sentences right :S Any help would be thoroughly appreciated.