How Create new record, duplicate info and save. In a form?

Good morning, I try to create a new record by opening a form, and then pass data from a query (duplicate the record) and then save it as a history of modifications. I try to do it with the method create () and later I write the step with the data () method, it does it correctly, however when closing the form it does not save a new record. (Only is a Table with out relations)

select MyTableCopyRow where ....

MyTable_Ds.create();

MyTable.data(MyTableCopyRow);

It has only worked applying the value to each of the fields, but they are 80.

MyTable_Ds.create();
MyTable.MyField1 = "abc";

MyTable.MyField2= "abc";

Thanks in advance...