Sample data-entry rules that use methods

Example 1

Characteristic	Description
Description	Use a math method to round the result of the existing rule, rulCalcBMI, to two decimal places.
Scope	Baseline event
Study structure	Baseline (study event) Demog (form) HT (item) Vitals (form) Weight (item) BMI (item)
Rule summary	evaluate on Form Submission value = Math.Round(_CalculateBMI(this.frmDemographics.itmHeight.Value,this.frmVitals.itmWeight.Value),2) always set this.frmVitals.itmBMI.Value = value Note: The solution above is the simplest solution, but not the best, as it does not clear the BMI field if Height or Weight are subsequently cleared, and it will cause an ISE if Height is 0.0. A better solution follows. evaluate on Form Submission value = !this.frmDemographics.itmHeight.Empty && !this.frmVitals.itmWeight.Empty ? (this.frmDemographics.itmHeight.Value != 0 ? 1: (!this.frmVitals.itmBMI.Empty ? 2 : 3)) : (!this.frmVitals.itmBMI.Empty ? 2 : 3) when value == 1 set this.frmVitals.itmBMI.Value = Math.Round(_CalculateBMI(this.frmDemographics.itmHeight.Value,this.frmVitals.itmWeight.Value),2) when value == 2 set this.frmVitals.itmBMI.Empty = true

Characteristic	Description
Description	Create a rule named rulTabsDispensed that checks that the sum of tablets dispensed is greater than zero and less than 500. The sum of tablets should use 0 as a replacement value. If false, fire a query.
Scope	Dispensing Record section
Study structure	DISPREC (section) Tabs (compound item) onemg (item) twomg (item) threemg (item)
Rule summary	evaluate on Form Submission value = (this.itmTabNum.itmonemg.GetValue(0) + this.itmTabNum.itmthreemg.GetValue(0) + this.itmTabNum.itmtwomg.GetValue(0)) > 0 && (this.itmTabNum.itmonemg.GetValue(0) + this.itmTabNum.itmthreemg.GetValue(0) + this.itmTabNum.itmtwomg.GetValue(0)) < 500 when value is false issue query on this.itmTabNum: The total number of tablets dispensed {TabsDisp} is not within the expected range. Please clarify or correct.