This document describes a technique for report developers that wish to utilize a Tree Prompt but require that the value submitted be restricted to a designated level within a hierarchy.

报表开发人员可能希望使用Tree Prompt，但是需要把提交的值限制为层次结构中指定的层，本文档介绍的技术可以满足这一需求。

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The data, compiled from a survey of property developers and real-estate agencies, followed a report by another provider on Wednesday that showed transactions were up in some major cities in late May.

WSJ: China Housing Market Shows Signs of Warming