求助：：：：：获取数据集变量异常！！！！！！！！
Sourced file: !{/root/TEST/Row[1]}.RECEIVE_USENAME unknown error: null : at Line: 1 : in file: !{/root/TEST/Row[1]}.RECEIVE_USENAME : !{/root/TEST/Row[1]} .RECEIVE_USENAME at bsh.Interpreter.eval(Interpreter.java:874) at bsh.Interpreter.eval(Interpreter.java:777) at bsh.Interpreter.eval(Interpreter.java:1030) at bsh.Interpreter.eval(Interpreter.java:1020) at jatools.data.Parameter.eval(Parameter.java:79) at jatools.data.Parameter.castValue(Parameter.java:68) at jatools.data.Parameter.defaultValue(Parameter.java:162) at jatools.data.Parameter.value(Parameter.java:111) at bsh.BSHPrimaryExpression.eval(BSHPrimaryExpression.java:123) at bsh.BSHPrimaryExpression.eval(BSHPrimaryExpression.java:55) at bsh.Interpreter.eval(Interpreter.java:816) at bsh.Interpreter.eval(Interpreter.java:777) at bsh.Interpreter.eval(Interpreter.java:1030) at bsh.Interpreter.eval(Interpreter.java:1020) at jatools.engine.script.ReportContext.eval(ReportContext.java:273) at jatools.engine.script.ReportContext.get(ReportContext.java:386) at jatools.engine.printer.TextPrinter.getText(TextPrinter.java:65) at jatools.engine.printer.LabelPrinter.print(LabelPrinter.java:113)
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