В чём ошибка с локальными переменными?

//Плавающий текст
scope SetTextTag{

    
    public int count = 0
    private unit this_u[]
    private texttag this_texttag[]
    private int this_time[]

    private int this_tt[]
    
    private bool this_poss[]
    
    private float this_z[]
    
    
    
    
    
    
    
    
        private void RemoveUnitStruct(int i){

          count--
          

        //====================
        this_u[i]=this_u[count]
        this_z[i]=this_z[count]
        this_poss[i]=this_poss[count]
        this_time[i]= this_time[count]
        this_tt[i]=this_tt[count]
        this_texttag[i]=this_texttag[count]
        //======================
		this_u[count]=null
          
        }    
    
        private void Remove(int i){
        DestroyTextTag(this_texttag[i])

        RemoveUnitStruct(i)

        }   
    
    

//    MiniFunc_SetTextTag_AddUnit(unit u,string text,float x,float y,float z,bool poss,float speed,float angle,float size,float time,int R,int G,int B,int A)
    public void AddUnit(unit u,string text,float x,float y,float z,bool poss,float speed,float angle,float size,float time,int R,int G,int B,int A){
    
        this_texttag[count]= CreateTextTag()
        
        SetTextTagText(this_texttag[count], text, TextTagSize2Height(size))
        SetTextTagPos(this_texttag[count],x,y,z)
        SetTextTagColor(this_texttag[count], R, G, B, A)
        
        float vel = TextTagSpeed2Velocity(speed)
        float xvel = vel * Cos(angle * degrad)
        float yvel = vel * Sin(angle * degrad)
        SetTextTagVelocity(this_texttag[count], xvel, yvel)
        this_u[count]=u
        this_poss[count]=poss
        this_time[count]=R2I(time*sek)
        this_tt[count]=0
        this_z[count]=z
        
        count++
    }
    
    
    
    
    void Action(int i){
    
        if(this_poss[i]){
            SetTextTagPos(this_texttag[i],GetUnitX(this_u[i]),GetUnitY(this_u[i]),this_z[i])
        }
        
        if(++this_tt[i]>this_time[i]){
        
        Remove(i)
        
        }
    }
    
    public void Update(){int i = 0 ;while(i<count){Action(i);i++}}
    //таймер на 0.025
    
}

//удаление юнита через время
scope UnitRemoveToTime{

        public int count =0
        //============================
        private unit this_u[] 
        private int this_timmer[] 
        private int this_tt[]

        private int Proverka(unit u){int i = 0;while(i<count){if(u==this_u[i]){return i}i++}return -1}


        private void RemoveUnitStruct(int i){

          count--
          

        //====================
        this_u[i]=this_u[count]
        this_timmer[i]= this_timmer[count]
        this_tt[i]=this_tt[count]
        //======================
		this_u[count]=null

          
        }

        private void Remove(int i){
       
       RemoveUnit(this_u[i])

        
        RemoveUnitStruct(i)

        }


        //MiniFunc_UnitRemoveToTime_AddUnit(unit u,float timmer)
        public void AddUnit(unit u,float timmer){

            int i =Proverka(u)
                    if(i!=-1){return}
                    
                        this_u[count]=u
                        this_timmer[count]=R2I(timmer*sek)//sek = 40
                        this_tt[count]=0
                        
                        count++
            

        }


            private void Action(int i){

                this_tt[i]++
                if(this_tt[i]>this_timmer[i] ){

                Remove(i)
                }

            }


            public void Update(){int i = 0 ;while(i<count){Action(i);i++}}
            //поток на 0.025



}