Problems when using collision model

[ruichen0]

``The problem occurred when I was using CollisionManagerGrid. When the add() was used, nothing added in to its buckets attribute.I monitored the conditions in the add(). Then I realized that the two rows:

for cell_idx in self._iter_cells_for_aabb(obj.cshape.minmax()):
     self.buckets[cell_idx].add(obj)

The second row did not run because the code in first line "Internal StopIteration". Then using the same data I monitored the func"self.iter_cells_for_aabb()". In the function, I realized that the value "iy_sup > self.rows" and "ix_sup > self.cols" is true, which is unexpected since it make "range(iy_lo, iy_sup)" in "for iy in range(iy_lo, iy_sup):" no longer running resulting from iy_lo bigger than iy_sup, which results to internal stop iteration because "the yield cell_id" won't run without the loop.
I use

width, height = director.get_window_size()
     self.cm = CollisionManagerGrid(0, width, 0, height, 40, 40)

to create the instance, according to the programming guide. However, the objects I wanted to add were outside the area because they are in a tiledmap which cannot be showed completely on the screen. I wonder if there is a solution? thank you in advance.