old bolting method getting bolts not for butterfly valve and new bolting method bolts not coming

what are  steps we need to follow in new bolting method for bolts to appear as when I am setting bolting to old bolts are visible when I am extracting isometric in isodraft module but not when I am using new bolting method i am, giving bltref at flange , valve and  have created bspec as well still for new method unable to get bolts what needs to be done for new method for bolts to appear and butterfly valve what settings have to be done