Separation Agreemet/Divorce

When we signed the S.A. I was 65 yars old. There is an issue about LIFE INSURANCE Husband agrees to name wife as irevocable beneficiary on any life insurance policy that he currently has.''I paid her the money 1998.'' Additionally, husband agrees to maintain for the rest of his life an additional life insurance policy in the amount of 100,000.00US$ naming wife as sole beneficiary. In the event that the Husband dies without such coverage the wife shall have a perfected creditor's claim in the amount of 100,000.00US$ against husbands estate.Is this issue valid since i contacted many ins. comp, and due to my age no such coverage is applicable, also divorced since 7 years, absolutely I am a retiree and survive only from my SS. Can the wife claim against my estate? I Have no Life Ins. since 98