Hi M G,
I recommend you reading the following KB article "Setting default values"
which demonstrates how to set default value of fields, but on the client side. Using defaults from server functions is not possible at the moment.
I hope the article is helpful for you.
the Telerik team
Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items.