icustom で inji = "4_Level_ZZ_Semafor";のシグナルのバッファ番号を知るには

#property indicator_chart_window
int OnInit()
{
return(INIT_SUCCEEDED);
}
int OnCalculate(const int rates_total,const int prev_calculated,const datetime &time,
const double &open,const double &high,
const double &low,const double &close,
const long &tick_volume,const long &volume,
const int &spread)
{
string str = "";
int peri = 1;//1 1min
string inji = "4_Level_ZZ_Semafor";
str = ("0= "+iCustom(Symbol(),peri,"4_Level_ZZ_Semafor",0,0)+"\n"+
"1= "+iCustom(Symbol(),peri,inji,1,0)+"\n"+
"2= "+iCustom(Symbol(),peri,inji,2,0)+"\n"+
"3= "+iCustom(Symbol(),peri,inji,3,0)+"\n"+
"4= "+iCustom(Symbol(),peri,inji,4,0)+"\n"+
"5= "+iCustom(Symbol(),peri,inji,5,0)+"\n"+
"6= "+iCustom(Symbol(),peri,inji,6,0)+"\n"+
"7= "+iCustom(Symbol(),peri,inji,7,0)+"\n");
Comment(str);
return(rates_total);
}