The Time Interval type is used for defining the total duration of a time period.
In Web Application, a Time Interval field looks as shown in Fig. 1, which features an editing form of a property.
Fig. 1. Time Interval field in Web Application (editing form)
Time Interval type settings in ELMA Designer
When you select Time Interval in the Type *field, additional fields appear on the Common and Advanced tabs apart from the basic fields.
Common tab
Fig. 2 shows the additional fields that appear if the Time Interval type is selected on the Common tab.
Fig. 2. Common tab. Additional fields
Can be empty – when this box is checked, the field can be empty. If you leave this field empty in Web Application, the variable has the Null value. When this box is not checked, the field's default value is "0 days 0 hours 00 minutes".