It is very hard to click my units

I use some custom models in my map, but for these units, it's very hard to click them. I don't know why, is there something i can do with the object data or it's the model's fault?

Try increasing the value of the field "Art - Selection Scale" in the object editor. I don't know if it will work, though.

I've had the same problem before with using small units. Even with large selection enabled it can still be hard to click on them. It think it had something to do with the selection height or tilt.

From what I've been told and experienced its because the model is missing a collision/selection sphere or its too small. You can fix this easily with Magos Model Editor.

Do this first in Magos:
Edit -> Properties -> Check Collision Shapes (Near Bottom Left)

Creating the sphere:

In Magos you now go to Windows -> Node Manager -> Right Click (Try to right click at the way bottom past all the nodes) -> Create Collision Shape -> Double Click the newly created collision shape -> Click Sphere -> Change the values to what you want, most of the time its just the Z and Radius. You can create multiple of these, I normally create 2. One for top portion and one for bottom. You want the sphere to be a little bit bigger than the unit.

Save it. Hopefully this helps.

Most likely, though, the extents are wrong. Just open the model in Magos and go to 'Edit --> Calculate Extents'.

Thank you for your help. I will give it a try !