Examples

Calculate VAT amount

charge.amount * charge.vat.rate

Calculate invoice no of days overdue, if applicable

if invoice.state <> InvoiceState.settled then (CalendarTime.now - invoice.dueDate).days else null

Concatenate employee name

employee.firstName + ( if employee.middleName = null then "" else ( if employee.middleName.trim = "" then "" else " " + employee.middleName)) + " " + employee.lastName

Find the largest value

order.amount.asOrderedSet().Sort(true).last()

Select female employees

employees.select( e | e.gender = Gender.female and e.state = EmploymentState.engaged)

Find birthdate of the youngest male employee

employees.select( e | e.gender = Gender.male and e.state = EmploymentState.engaged).asOrderedSet().sort(false).first()  

Create a comma separated list of regions

String.join(",", regions.name, false)

Validate IBAN format

CheckSum.ibanValidate( transaction.recipientIBAN )