[Grand Darkness for Old Glast Heim - Challenge Mode]

Hi guys
I'm trying to make NPC_GRANDDARKNESS to show animation even though skill didn't attack anyone.
like this

 

I try to use unitskillusepos and unitskilluseid to do but it didn't work 

here is my testing script
 

Quote

prontera,152,183,5    script    #TEST    444,{
        donpcevent "#TEST1::OnStart";
        end;
}
prontera,0,0,5    script    #TEST1    139,{
    end;
OnStart:
         monster "prontera", 155, 183, "--ja--", 20581, 1,"#TEST1::OnThorn1D";
         .ThornAlive = 1;
         [email protected]_gid = [email protected][0];
         sleep 3000;
         unitskilluseid [email protected]_gid,353,5;
        initnpctimer;
        end;
OnTimer1000:
            if(.ThornAlive == 1){
                if ( unitexists([email protected]_gid) ) {
                getunitdata([email protected]_gid, [email protected]);
                [email protected] = [email protected][UMOB_X];
                [email protected] = [email protected][UMOB_Y];
                    for( [email protected] = 1; [email protected] < 2; [email protected]++){
                        donpcevent "#ThornOGH::OnThorn"[email protected];
                    }
                }
            }
        end;
OnThorn1D:
    .ThornAlive -= 1;
    end;
}
doubrius,0,0,5    script    #ThornOGH    139,{
    end;
OnThorn1:
    setunitdata [email protected]_gid,UMOB_MODE,134217728;
    for ( [email protected] = 0; [email protected] < 3; [email protected]++){
        unitskillusepos [email protected]_gid,339,5,[email protected],[email protected],-1000;
        sleep 2000;
    }
    unitkill [email protected]_gid;
    end;
}

How to prevent dection skill for "Thorn"
-> I'm try to set mobmode to Skillimmune and Ignoremagic but Mob get detect by Sign and Ruwach 

Thanks for your help.