creating special effects over targets of spells

how do i create a Special effect over the target of my spell? i want to create the especial effect of the "trueShot aura" below the enemy target of my spell until the spell finishes.

E Unit is issued an order targeting a point
Unit begins casting a spell

C Spell equal to (your spell here)

A Create effect using (Trueshot aura path here) at targeted point
Wait (however long the spell lasts)
Destroy last created effect

What kind of spell is this? Is it a channeling spell? AoE?

i also need to set the speed of atacked unit (the victim of the spell) to cero "0"

the spell is Entangling Roots. and a trueshot aura will apear below the unit?

Is this what you want?

i ve got a question too.... if u do : destroy last special effect....does it destroy the last special effect of this trigger or of the ongoing game?

Special Effect - Destroy last created special effect

Refers to the last created special effect. Whether it was created by the trigger trigger itself, or by another trigger, doesn't matter.

EDIT: If you mean non-trigger related special effects, I believe the answer is no.

this means when i do another specialeffect during the time i wait till the last special effect is destroyed that the triggers doesn't destroy my first special effect.... is there a possibility how i can choose which special effect shall be destroyed?

@babuu, you can set each SFX into its own variable, then you can destroy them later as you wish..

example:
A- create SFX at origin of (castingunit) using blah blah blah
A- set xxxxSFX[1] = last created SFX
A- create SFX at overhead of (castingunit) using blah blah blah
A- set xxxxSFX[2] = last created SFX


when your rdy to destroy them
A- destroy xxxxSFX[1]
A -destroy xxxxSFX[2]