Solved How do you change the product key??

I am testing wimboot images and applying them.. One of the steps required is to apply the install.wim image.. But here is the issue the install.wim that is used to create the wimboot image is the default windows setup image by mounting the install.wim is there a way to change the product key in the mounted image?? I would have to remove the default product key in the image and then apply...