Maze Algorithm Problem

Hi, I'm trying to create a simple maze generator for my game, using the Recursive Division Method ( http://en.wikipedia.org/wiki/Maze_generation_algorithm ) But I'm getting stack overflow exceptions. (TBH, I'm really confused...) Here's the code (Boo):

     def slice_v(x as int, y as int, w as int, h as int):
         d = Random.RandomRange(x, w)
         
         for i in range(y, h):
             maze[i, d] = Wall.VWall
         
         rem = Random.RandomRange(y, h)
         maze[rem, d] = 0
         
         Generate(x, y, d, h)
         Generate(d, y, w-d, h)
     
     def slice_h(x as int, y as int, w as int, h as int):
         d = Random.RandomRange(y, w)
         
         for i in range(x, w):
             maze[d, i] = Wall.HWall
             
         rem = Random.RandomRange(x, w)
         maze[d, rem] = 0
         
         Generate(x, y, w, d)
         Generate(x, d, w, h-d)
     
     def Generate(x as int, y as int, w as int, h as int):
         if w < 2 or h < 2: return
         
         if w > h:
             slice_v(x, y, w, h)
         elif w < h:
             slice_h(x, y, w, h)
         elif w == h:
             i = Random.RandomRange(0, 1)
             if i == 1:
                 slice_v(x, y, w, h)
             else:
                 slice_h(x, y, w, h)

I don't really know what am I doing wrong. Well, thanks in advance...