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Completing the Conditions tab for Access When rules

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Use the Conditions tab to enter or revise an Access When condition rule that can be expressed as a single Boolean expression, or the conjunction ( AND or OR ) of one or more Boolean expressions.

Each node on the conditions tree defines a single comparison or other condition that evaluates to True or False. The Access When condition rule evaluates to True only if all nodes evaluate to true. While the order of nodes may affect computational performance, order does not affect the outcome of the Access When condition rule evaluation. Use these options:

The conditions and logical operators you enter on this tab also appear on the Advanced tab's Condition array and Logic String field.

  • To create the first expression, perform the following actions:

    1. Double-click the link below the When node.

    2. The Condition dialog appears, and contains the default condition, which compares two values.

    3. Enter properties, literal constants, or function calls and parameters in the fields, and select a relational operator.

    4. Optional:

      Select the down arrow at the end of the row for a list of standard conditions (derived from function alias rules). Open it by clicking the Open icon.

      If you select [expression evaluates to true], use the Expression Builder for guided assistance.
    5. Optional:

      Click OK to close the dialog and display the condition on the tree.

  • To add, edit, or delete conditions, or to create groups of nested conditions:

    • Open the Actions menu next to the node.
    • Right-click the node.
    You can use the following options:
    Edit
    Update the condition.
    Insert Condition
    Add a condition beneath the selected node. When you close the dialog, an AND or OR logical operator appears to the left of the new node. You can toggle between them by clicking the operator. Changing one value changes all of them at the same node level.
    Insert Group
    Create a group of nested conditions. Enter a name in the Group Label field to help identify the group on the tree. When you close the dialog, the condition is indented beneath the node above it. Use the expand and collapse icons to display or hide the nodes within the group. When collapsed, only the label is displayed. To edit the label, select it on the tree and choose the Edit menu option. You can nest groups at multiple levels; for example: A AND B AND (C OR (E AND F)).
    Delete
    Delete the expression node. Node groups nested beneath it are also deleted.
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