Yannis,

Try this:

Data A B; set A; ** assume variable "adelete" is true (1) when you want to delete it from "A" **; if adelete = 1 then output B; else output A;

This code will write observations to the respective data set depending on the state of the variable "adelete".

Best regards, Larry

yannis@philos.com wrote in article <5ahhq6$adh@vnetnews.value.net>... > I have a datasets. A . I need to delete an observation from A and > copy it to a new data set B. B has to be created. > >