Does a change in beneficiaries of a life insurance policy change the beneficiaries of the beneficiary of the deceased's life insurance policies violate section 172 of the Civil Code?

The decision in Fields v. Michael, 91 Cal.App.2d 443, 205 P.2d 402 strongly indicates that the trial court's decision in this case is correct and that appellants are wrong in their contentions that (1) the determination of what constitutes community property is a matter resting exclusively in the probate court; and (2) that decedent's acts in changing the beneficiaries of the life insurance policies did not violate the provisions of section 172 of the Civil Code.