The selection service tracks component selections on the designer surface.

选择服务会跟踪设计器表面上的组件选择。

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Now, you can define the selector so that the service call gets routed to the correct component. In the next steps, you specify the selection criteria, which is the value of the applyDate variable

现在，您可以定义选择器，以便将服务调用路由到正确的组件。

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