**Note**: This attribute is only relevant when both `withValue=true` AND `withLabel=true`.

**Layout Modes**:
- `false` (default): Two-column layout with label and value side by side
- `true`: Single-column layout with label above value

**Parent Widget Override**: When this widget is embedded inside a `cf.platform.connectedAttributesGroup` widget, the parent widget's `singleColumn` setting takes precedence over this widget's setting. The parent's layout configuration will override the individual widget's setting.

**Example**: If the parent ConnectedAttributesGroup has `singleColumn=true`, all embedded ConnectedSingleAttribute widgets will use single-column layout regardless of their individual `singleColumn` settings.