hello Jithin,
See documentation of the Combobox item , there is no field additionalText.
new sap.ui.core.Item(sId?, mSettings?)
Constructor for a new Item.
Accepts an object literal mSettings
that defines initial property values, aggregated and associated objects as well as event handlers. See sap.ui.base.ManagedObject for a general description of the syntax of the settings object.
The supported settings are:
- Properties
- text : string (default: )
- enabled : boolean (default: true)
- textDirection : sap.ui.core.TextDirection (default: Inherit)
- key : string
In addition, all settings applicable to the base type sap.ui.core.Element can be used as well.