If the right to attach order is issued after a noticed hearing, or if after issuance of a writ of attachment additional writs are issued after a noticed hearing, any claim of exemption by the defendant is required to be made at the hearing. The claim of exemption must be filed in the court and served on the plaintiff at least five days prior to the hearing. If the defendant fails to file the claim, he may not later claim an exemption. (CCP 484.340(d))