My stairs are squares, what do?

I am in the early stages of making a 2D platformer title, and I am trying to make stairs. The main setback I face at the moment, isn't getting up the stairs, but having them even collide properly. Some searches have shown me that in a tilemap (solid), any pixels that are transparent should not be collidable with, but mine are.

The stairs are clearly transparent in the software I made them in (16x16 exported to 32x32), but it is regarded in the same manner as a solid block.

This is not a problem with the player's collision, which is very close-fitting.

So what is to be done?

Everything in construct, including tilemap use collision polygons not per pixel collisions. You should be able to set the polygon per tile. I think there’s a button for that on the tilemap toolbar.

I see no option for this. What am I doing wrong?

Double click the individual tile in the tilmap bar.

That makes things so unbelievably simpler, thank you so kindly!