Dear Friends,Thank you for your help.
After your help I have tried again.And now I can do that.the details are say as following:
1. you'd best insert a base axes in the model, this should be the revolve center line.
2. draw a revolve model using that revolve center line
3. now we will add a v groop on the surface on the revolve model
1) feature-->create-->solid-->cut-->revolve-->solid-->done
2) choose one side in the attributes then-->done
3) choose setup New-->make Datum-->Through-->select the revolve center line -->angle--> select a plane(top or front or rignt in Pro/E 2001) -->done--> select Enter a Value-->
enter 45 degree-->done
4) this step is more improtant than others. now you can see Use Prev and Setup New on the SETUP SK PLN-->select Setup New-->select an endface on the revolve model-->select Flip or Okey-->top-->select the Datum plane you have made before-->now you can see the references dialog box-->select the the datum plane and another plane as your reference-->now you can drow an v type line and be care to align the both end points on the v type line and the circle. then you can using through all and other s to get only one V groop.
5) select the cut model and then select pattern -->General-->done-->select the value you want to pattern and enter the numbers you want -->done
Now you can get the v groop pattern.
Thank you for your help again, my dear friends.
Seagull