Seams like something you should be asking ProfilePro; we're not the developer of ProfilePro nor provide support for ProfilePro. CB can not dynamically display drop-down select field values based off another fields value. It can dynamically display another field based off an another fields value however using incubator project CB Conditional, but I've no idea if this works with ProfilePro or not.
Kyle (Krileon) Community Builder Team Member Before posting on forums:
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