How can I swap CAPSLOCK for BACKSPACE?

To close this one, I'll add my current fix. Maybe someone can use it too. Put this in a script, autostart it with DE:

setxkbmap -option caps:backspace
setxkbmap -option shift:both_capslock
xmodmap -e "clear Lock"

You can actually make some changes to your keys exchange. Click on power icon, on the extreme top right hand corner of your screen. Select 'System Settings' and double-click on 'Keyboard Layout'. Locate 'Option' at the popup box and click on it. Look for 'CAPS Lock Key Behavior' and click on the arrow before that option, from the drop-down menu select 'Make Caps lock additional Backspace'. I hope that answers your question. Thank you.