8.3.11   ClearValue

The ClearValue modifier enables the clearing of an associated field or a value in a value map. The supported parameter types are OUT and VARIABLE, see Figure 183

If no fields of the supported types have been created, the Field parameter shows No available fields found.

If the associated field is a map, a Clear value for key check box is visible. Selecting this check box allows a specific value in a map to be chosen as the field to be cleared. If the check box is not selected, then the map itself is cleared. By using constraints when setting up the service connected to the condition, it is possible to change the behavior of the clear value for key function. The solution that integrates ERE may already implement these changes. The following changes are possible:

• Hide the check box. This forces the map itself to be cleared, rather than a single value.
• Force the check box to be selected. This forces the user to specify the key to the map value to be cleared, rather than clearing the map itself.

For more information on how to use constraints, see Section 5.5.