(a) Total contributions to the account established on behalf of a particular designated beneficiary in excess of those reasonably necessary to meet the designated beneficiary's qualified disability expenses are prohibited.
(b)
(1) An account or a legal or beneficial interest in an account shall not be assignable, pledged, or otherwise used to secure or obtain a loan or other advancement.
(2) An account or a legal or beneficial interest in an account is not subject to attachment, levy, or execution by a creditor of an account owner or designated beneficiary.