[JASS] How can i use this, and why do i get like a billion errors on it?

[Dynasti]

Ok im using "Jasscraft" to get my natives and know how to setup sum functions but in the native list there is something that is programmed by JassCraft or whoever made it called "Projectile system" or sum.
it looks like this(its one part of it "the one i want")

function DamagingProjectileLaunchTargetLoc takes unit hurter, string modelpath, real speed, real arc, location loc, real z1, unit target, real zoffset, real damage, attacktype attT, damagetype dmgT returns unit
    return DamagingProjectileLaunchTarget(hurter,modelpath,speed,arc,GetLocationX(loc),GetLocationY(loc), z1, target, zoffset, damage, attT, dmgT)
endfunction

function DamagingProjectileLaunchTarget_Child takes nothing returns nothing
 local unit m=udg_currentcaster
 local unit target=bj_meleeNearestMine
 local effect fx=bj_lastCreatedEffect
 local real damage=udg_castervars[4]
 local damagetype dmgT=ConvertDamageType(R2I(udg_castervars[6]))
 local attacktype attT=ConvertAttackType(R2I(udg_castervars[5]))
 local unit hurter=udg_currenthurter
 local real speed=udg_castervars[7]
    if (speed<=522) then
        call SetUnitMoveSpeed( m, speed)
        call UnitMoveToUnitAsProjectile(m, bj_meleeNearestMineDist, target, udg_castervars[2])
    else
        call UnitMoveToAsProjectileAnySpeed(m,speed, bj_meleeNearestMineDist,0,0,target,udg_castervars[2])
    endif
    call DestroyEffect( fx)
    call DamageUnitByTypes(hurter,target,damage,attT,dmgT)
    call ExplodeUnitBJ(m)
 set m=null
 set hurter=null
 set target=null
 set fx=null
 set dmgT=null
 set attT=null
endfunction

function DamagingProjectileLaunchTarget takes unit hurter, string modelpath, real speed, real arc, real x1, real y1, real z1, unit target, real zoffset, real damage, attacktype attT, damagetype dmgT returns unit
 local unit m=AddCasterFacing( Atan2BJ(GetUnitY(target) - y1, GetUnitX(target) - x1) )
    call SetUnitPosition(m, x1,y1)
    set udg_castervars[7]=speed
    call SetUnitFlyHeight( m, z1, 0)
    set udg_currentcaster=m
    set bj_lastCreatedEffect=AddSpecialEffectTarget( modelpath, m,"origin" )
    call SetUnitOwner( m, GetOwningPlayer(hurter), true)
    set bj_meleeNearestMineDist = arc
    set udg_castervars[2]= zoffset
    set bj_meleeNearestMine=target
    set udg_castervars[4]=damage
    set udg_castervars[5]=CS_H2I(attT)
    set udg_castervars[6]=CS_H2I(dmgT)
    set udg_currenthurter=hurter
    call ExecuteFunc("DamagingProjectileLaunchTarget_Child")
 set m=null
 return udg_currentcaster
endfunction

function DamagingProjectileLaunchAOELoc takes unit hurter, string modelpath, real speed, real arc, location loc1, real z1, location loc2, real z2, real aoeradius, real damage, boolean affectallied, integer DamageOptions returns unit
    return DamagingProjectileLaunchAOE(hurter,modelpath,speed,arc,GetLocationX(loc1),GetLocationY(loc1),z1,GetLocationX(loc2),GetLocationY(loc2),z2, aoeradius, damage, affectallied, DamageOptions )
endfunction

function DamagingProjectileLaunchAOE_Child takes nothing returns nothing
 local unit m=udg_currentcaster
 local effect fx=bj_lastCreatedEffect
 local real x2=udg_castervars[0]
 local real y2=udg_castervars[1]
 local real aoeradius=udg_castervars[3]
 local real damage=udg_castervars[4]
 local boolean affectallied=bj_isUnitGroupInRectResult
 local integer V=CreateDamageOptions(R2I(udg_castervars[5]))
 local unit hurter=udg_currenthurter
 local real speed=udg_castervars[6]
    if (speed<=522) then
        call SetUnitMoveSpeed(m, speed)
        call UnitMoveToAsProjectile(m, bj_meleeNearestMineDist, udg_castervars[0], udg_castervars[1], udg_castervars[2])
    else
        call UnitMoveToAsProjectileAnySpeed(m,speed,bj_meleeNearestMineDist, udg_castervars[0], udg_castervars[1],null, udg_castervars[2])
    endif
    call DestroyEffect(fx)
    call DamageUnitsInAOEEx(hurter,damage,x2,y2,aoeradius,affectallied,LoadDamageOptions(V))
    call DestroyDamageOptions(V)
    call ExplodeUnitBJ(m)
 set m=null
 set fx=null
endfunction

function DamagingProjectileLaunchAOE takes unit hurter, string modelpath, real speed, real arc, real x1, real y1, real z1, real x2, real y2, real z2, real aoeradius, real damage, boolean affectallied, integer DamageOptions returns unit
 local unit m=AddCasterFacing( Atan2BJ(y2 - y1, x2 - x1) )
    call SetUnitPosition(m, x1,y1)
    call SetUnitFlyHeight( m, z1, 0)
    set udg_currentcaster=m
    set bj_lastCreatedEffect=AddSpecialEffectTarget( modelpath, m,"origin" )
    call SetUnitOwner( m, GetOwningPlayer(hurter), true)
    set bj_meleeNearestMineDist = arc
    set udg_castervars[0] = x2
    set udg_castervars[1] = y2
    set udg_castervars[2] = z2
    set udg_castervars[3] =aoeradius
    set udg_castervars[4] =damage
    set udg_castervars[5] =DamageOptions
    set udg_castervars[6] =speed
    set udg_currenthurter=hurter
    call ExecuteFunc("DamagingProjectileLaunchAOE_Child")
 set m=null
 return udg_currentcaster
endfunction

So how could i make this work??

 

[Emm-A-]

first you should tell us, why it doesen work or for what you need it.

Because, i can see the code, but i have no idea, how i could help you.
Please add more information