For example:

formula: 'Math.round((acrobatics + alchemy + archery + axes + excavation + fishing + herbalism + mining + repair + swords + taming + unarmed + woodcutting) / 5)'

This would mean that any 5 combine skill level = 1 combat level?

I found out when you hit 3, you would get combat level 1.
8 = combat level 2
13 = combat level 3
etc.

Can please you look into this?

Any news on this?

formula: '(acrobatics + alchemy + archery + axes + excavation + fishing + herbalism + mining + repair + swords + taming + unarmed + woodcutting) / 5'

So is this what you mean?

yes

Do you have Javascript enabled?

EDIT: Ahh, I found it. In this case you shouldn't round the numbers. Example
round(3 / 5)
=round(0,6)
=1

or
round(13 / 5)
=round(2,6)
=3

You can just remove the "Math.round(" and the closing brace and that's. It would round off.

Thank you !