problem with volume

Development Programming & Scripting Blueprint
1

HI all…
I ve created the pawn and a volume so this monster can chase me…now why this monster can’ go on this stairs? He get go on the second stairs but she can down the stairs …why?
http://s14.postimg.org/p5orfyusd/Immagine.jpg

2

There is a setting for max step size and max angle for pawns.

3

nono i arleadt see… i controll all the variable of the monster with that of my character…and they are the same but my character can go there…the monster stop to the seconds stair

4

Please help me i need xD