I bought a pair of FLashQ wireless radio triggers for my Nikon D700 and SB-28. I can get the flash to fire by pressing the button on the receiver and the trigger connected to the SB-28. It will not flash when I press the shutter on the D700. What setting(s) do I need to have enabled on the camera to fire the flash when I take a shot? I have tried multiple setting in the bracketing/flash menu. I just cannot get it to work.