Asset flat after exporting from Blender

[Aubergine 0]

Hello. I have been working on my first asset. A monorail train. I have gotten far enough that I wanted to see if I could look at it in the game. I followed a torturial on youtube, checked all the boxes like he but something has gone wrong. The asset opens fine in the asset editor but it's height is all wrong. It is completely flat. Lenght and width look right. Very weird.

Just to try I scaled the height very high in blender and that did work a bit but that distorts the whole thing. Does anyone know what is wrong?

[Aubergine 0]

You can delete this. I solved it. Apply crtl a in object mode and apply rotation and scale.