Dimension value limits and constants

Dimensions are populated by event, hit attribute or session attribute data that is detected in the capture stream or by values that you manually specify. In the dimension definition, you can specify the data source and values for the object that is detected in the session.

You may configure whether the first or last value of the attribute or event is used. The value that you specify to populate the dimension definition depends on the configuration for the populating event or hit attribute.

• A hit attribute can acquire either the first match or all matches.
• Events can acquire the first, last, or all matches.

The value of the Populate With setting (first or last value) on the dimension only matters if the hit attribute or event is returning multiple values.

• If the hit attribute or event returns a single value, then the dimension has only one possible value to retrieve, so the Populate With setting is irrelevant.

If the dimension is populated by an event or session attribute, you may populate it with the first or last value in the session only.