You can specify any combination of a Lower Spec Limit, an Upper Spec Limit, or a Target. The Show as Graph Reference Lines option displays the specification limits and target that you specify as reference lines on appropriate plots.
Write(
			"Out of Control for test ",
			qc_test,
			" in column ",
			qc_col,
			" in sample ",
			qc_sample
		)

Help created on 7/12/2018