I Unitec activities but they do not work right, I copy to the mission.rte, disable the normal activities and actors appear crobotech

how can i fix it?

First, you have to disable the activities files for all other mods that you don't want functioning. Then, I'm not entirely sure why you copied the activities files to Missions.rte, but you should just be able to remove the // from whichever activities you want from the UniTec module. Your main problem is that you need to ensure you have no other activities enabled, though.

I have disabled the normal and the unitec activated only this

crobotec appears for your activities because you didnt disable them. If you want unitec, your gonna need to disable A) the vanilla activities, and B) every other activity from A-U in your mod folder.

thanks its working Unitec dies hard xD