how can i add input box to watch face?
Watch faces themselves don't allow any type of input, but you can use app settings to change things from your phone or with Garmin Express.
Starting with CIQ 3.2 and on devices running 3.2, you can customize WF's in the same way you can customize native watch faces.
can you give me a link of a sample ?
The Objectstore sample in the SDK shows both the object store as well as app settings.
