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InterSystems MDX Reference
Quality Measure Expressions
InterSystems: The power behind what matters   

This section describes how to create and use quality measure expressions, which provide access to the values of quality measures. These expressions are an InterSystems extension to MDX.
A quality measure expression has the following syntax, which refers to a special dimension in Business Intelligence called %QualityMeasure:
[%QualityMeasure].&[catalog/set/qm name]
[%QualityMeasure].&[catalog/set/qm name/group name]
The first expression returns the value of the quality measure. The second expression returns the value of the given group.
You can use quality measure expressions in the same way that you use other measures.