Open the Variable builder named bankId.

打开名为 bankId 的 Variable builder。

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For example, in the code snippet below, the subscriber ID is implemented as a variable called bankID as part of the processLoan message used in a sample loan-processing business process.

例如，在下面的代码片段中，订阅者 ID 实现为名为 bankID 的变量，属于示例贷款处理业务流程所用的 processLoan 消息。

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