Solved Creating a creeper explosion with customisable range

[WiebeHero]

So i have been working on loring for a while and now i want ot create a explosion that well deals damage.
Here is my code:
on damage:
attacker is player
chance of 100%
if the 1st line of lore of attacker's held item contains "Blast I":
create explosion at location of victim
but this doesnt work sadly.....
Any help? Thanks! ;D

 

[White]

If you look up explosion on the docs, it will show "of force #" next to explosion in a code line.