CrossFire Glitch Help Please

Wasn't sure where to put this topic, so I just put it here, even tho it's not a hack.

How do you glitch into the boxes on CrossFire Port mutation?
Example:

Can someone please explain/post a video to give me a tutorial to learn PLEASE?

Thanks

It's called Corner Glitching
how to do it:
1. Press shift and walk forward
2. Jump on very edge of box
3. Jump again the hold shift press w and s
- speed depends on u
4. Walk inti center of box and press ctrl
- if u don't fall in let go if shift and press ctrl

U can also do this by crouching the whole time instead of pressing shift

All boxes can be corner glitched but b careful som zap ur health

let me kno if u dint understand somthin