Why does my character can't step on the collision?

Development Asset Creation
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1

Hello. I’m trying to create stair, but I can’t use it. I created stair in blender with UCX file, I tried to use convex decomposition with minimized and maximized parameters in engine to generate collisions, I tried to use complex collision as simple, I tried just to create 2 box collisions with small distance between them:

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image1347×899 75.6 KB

but my character can’t step on it in any case. How to fix that problem?

2

Well, the problem was in another collision I didn’t mention. My character can’t go upstairs because there is obstacle above it.