Omega OME-75 tank

how do you fill this tank. it is not a standard DIN. or Scuba i.e.: it has female threads! I rigged a contraption @ the FD so we could put air in it. worked by Not good!!!
​there has to be an adapter or fitting arrangement to convert the Omega tank to fill in the " normal" male thread or scuba configuration. Any help would be tremendously appreciated.
OOk, got all my answers. Taans all!
 
I have the same tank. This is what I bought from Pyramid Air: 
Benjamin-300DIN-PY-A-4636_LG.jpg
Benjamin 300-DIN Male Adapter, Fill Adapter, Fits Benjamin Carbon Fiber Tanks
http://www.pyramydair.com/s/a/Benjamin_300_DIN_Male_Adapter_Fill_Adapter_Fits_Benjamin_Carbon_Fiber_Tanks/4636

You unscrew the hose assembly and screw this in when you want to fill your tank. good Luck; it is confusing when you first start.