[Solved] RF Online Flame thrower Model..

[Yudistira]

i want to make projectile effect like flamethrower,
but not really ordinary flame thrower, it is based on
projectile unit from RF Online

like this

i got some clue from warcraft
using big red dragon projectile and set the attack delay of the unit to 0.01

here it is,

but the problem is,
i want the attack animation like that, but not that fast (0.01 attack delay),
just the animation, so if my hero have 2 second attack delay i.e, every 2 second he attack with such animation, with medium projectile speed, but like that.

a trail of flame effect to be left that lasts for close to a second.
a special projectile model with long lasting particle effect.

is it possible to make the projectile passes through the target?
like the image above?

this is the test map

test map

can anyone who have spare time and kind heart help please..^^
thanks