hi
I want to start value in autonumber field at certain number than 1
ex. start autonumber at 1000 then 1001 ......
how
thank you

If you type autonumber in Access help it will tell you how to do this.

And if that doesn't help then MVP Allen Browne has additional help on the topic.
Set AutoNumbers to start from ... (http://allenbrowne.com/ser-26.html)