How to use Copy From/Copy To function to UDO

Hi all,

Is it possible to use copy to or copy from function in UDO?

my situation is, I have 2 UDOs, and both structure are very similar (header and rows tables). just like Sales Quotation and Sales Order. and i want a function to copy an object data, based on a primary key from UDO1 into UDO2 (or the other way around). Is there any way to do that? Please help. this is my first addon.

Thanks in advance,

Azif