When you add multiple conditions to a rule, the conditions
are automatically joined together to form a logical expression.
The logical expression defines how the conditions are evaluated
together to determine whether rule actions should be performed. By
default, the logical expression uses Boolean AND logic rather than
OR logic. Conditions joined by an AND operator must all be met for
rule actions to be performed. When using the OR operator, any condition
can be met.
- Add more than one condition to the rule.
- Click Combine the Conditions Using a Logical
Expression.
The Edit Logical Expression window
opens. The conditions you added are automatically joined with AND
logic and display in an AND tree node.
- To add a condition joined with OR logic, click Add OR Node and drag the condition to the OR node.
Caution: Deleting a node from the logical expression
will also delete any conditions listed beneath that node in the tree
structure, and there is no Undo option.
When you add nodes to the expression, the nodes display
in a tree structure, with conditions either under an AND
node or an OR node. Conditions under the same AND node are joined
to each other using AND logic. Conditions under the same OR node are
joined to each other using OR logic. Conditions can be dragged from
one node to another to define their logical relationships.
- To delete a node from the logical expression, select the
node and click Delete Node.
-
To view a text definition for the logical expression, click View Text
Definition.
-
Click OK.