我在Queue Matching中定义了绑定属性名字为“match”,但运行仿真的时候,出现这边一段话```+ P. H a2 S' o5 T7 w" Q
An entering item has not been assigned value for the Match Attribute named "match"" N9 m: T+ n6 o+ \) v0 T
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我应该怎样解决这个问题???) j; g7 ?2 N9 W. a& M0 `, \3 ]