Edit the User Interface Properties of a Field

To edit the user interface (UI) properties of a field:

1. Navigate to Application Composer.

2. Expand the object whose page layout you want to make changes to.

3. Click the Pages node.

4. In the Details Page Layouts section, select the page layout that you want to update.

5. Click the field whose properties you want to set or edit.

   Note: Fields that already have property settings configured display an icon next to them.

   The Edit UI Properties page appears with the current properties of the field listed in the Field Definition section.

6. In the Layout Properties section, specify or edit the Required, Updatable, and Hidden properties as required for the current layout.

   Values available for the properties are listed below:

   Property	Values
   Required	Yes No Expression
   Updatable	Yes No Expression
   Hidden	No Expression

7. To set a a rule for a property using an expression:

   1. Select Expression as the value.

      An expression builder icon appears next to the property.

   2. Click the Expression Builder icon to open the Advanced Expression dialog and enter the expression.

      Note: Field properties are evaluated many times while rendering a page. This means that any expression you enter here could impact performance. In general, when entering an expression to make a field conditionally required or updatable, avoid using object functions and don't set any object attribute values.

   3. Click OK.

      The expression you enter appears as read-only text next to the property on the Edit UI Properties page. If you select expression and don't enter any expression, an error message appears.

8. Click Save and Close.

9. Click Done on the Details Layout page.

The edited field is updated for the current layout.