How to make a spell do damage equal to stats

[Beau]

How do you make a spell do damage equal to stats e.g. Make stormbolt do 2x your strength in damage or 1x your agility in damage etc.

If it's jass then don't bother helping me just tell me it's in jass.
Cheers

 

[redscores]

It is possible in GUI and in JASS, simply use Damage Target Unit function and at the option damage the real you check for a function which can detect hero stats (maybe under... heroes?^^).