Mo. Rev. Stat. § 513.065: Finding as to preferred amount recited in execution and judgment.

The court or jury trying such action shall, if they find for the plaintiff, also find how much he or she is entitled to recover for services, such as are specified in section 513.470, for which suit was commenced, within the time limited in section 513.060, which facts shall be set forth in the judgment rendered, and recited in the execution issued thereon.