Unable to Link DOW map with Dawn of War game Thread

I have recently finished my first map for Dawn of War Soulstorm expansion, Myrmidon Prime. I have uploaded it as an addon, as it should be, but in the last stage of upload process, where you link the custom creation with corresponding game, I was unable to find DOW in the general search. The closest thing suggested by the search was DOW 2. You can see my predicament here. I was wandering is this a glitch or something else and how can I get around this? I would like to make my map and others to follow accessible to wide range of DOW community and linking it with the game itself would be the easiest way. I would have to link it to different DOW groups, which is less preferable and inferior solution.
Assistance on this issue is greatly appreciated.

ZmajOgnjeniVuk

Would someone be so kind to at answer this question, or at least say that no alteration is possible so that I know where I stand. I'm not asking much, am I?