Quote: "riccetts hello, you can not use the right mouse button into segments, to assign a script to a wall, I recommend using as an entity wall, such as the walls come by default, scifi-scenary-wall furniture. to that entity you can change your taste and texture to assign a script of any door. I hope I have helped. My English is not very good "
Your English was perfect
You can't assign a script to a segment wall, but indeed do need to make it into an entity.
Doors (for example) contain key components: frame, door, and punch. The door is actually an entity where you can click on it to assign scripts, change properties, etc. Walls have to be entities in order to assign any script to them.
There's no problem that can't be solved without applying a little scripting.