how to add serial key of WinXP through rhevm-config

Hi,

I have created WinXP template after run the sysprep utility,and now i want to create Desktop pool.

i have created the 6 desktop but fist time i have to provide serial key on all 6 desktops. i ran rhevm-config command to add the serial key , but i am getting bellow error message

[root@rhev-m ~]# rhevm-config --set ProductKey=XXXX8-XXXX6-X7XXX-X3XXX-X9XXX --cver=winxp
Error setting ProductKey's value. No such entry with version winxp.