question about this spell i created

[Ragnarok-X]

#newspell
#copyspell "Thunder Strike"
#name "Chain Lightning3"
#descr "Chain Lightning3"
#school -1 - spell cannot researched
#researchlevel 0 - no research required to cast
#precision -3
#aoe 4
#damage 1005
#range 5015
#end


#newspell
#copyspell "Thunder Strike"
#name "Chain Lightning2"
#descr "Chain Lightning2"
#school -1 - spell cannot researched
#researchlevel 0 - no research required to cast
#precision -2
#aoe 3
#damage 1006
#range 5015
#nextspell "Chain Lightning3"
#end


#newspell
#copyspell "Thunder Strike"
#name "Chain Lightning"
#descr "The caster calls down a furious Lightning, striking the targeted area 3 times."
#school 2
#researchlevel 4
#path 0 1
#pathlevel 0 3
#precision -1
#fatiguecost 80
#aoe 2
#damage 1007
#range 5015
#nextspell "Chain Lightning2"
#end





basicly, i wanted it be a thunder strike that calls down 3 lightnings, each one with more AoE but less damage.
Unfortunally, it seems all of them are called down at the same moment, instead of being zap-zap-zap.

Any idea on how to fix it ?