Что не так? input значения цен.

Делаю input значения цен, все по книжке - пишет ошибку "improper enumerator cannot be used"

Код:

#property script_show_inputs
enum my_price
  {
   A=0,     // close
   B=1,     // open
   C=2,     // high
   D=3,     // low
   E=4,     // median
   F=5,     // typical
   G=6,     // weighted
  };
extern string SETTINGS1 = "<<< BB Settings >>>";
extern int BB_period = 20;
extern double BB_deviation = 2.7;
extern int BB_shift = 1;
input my_price BB_price = A;
extern string SETTINGS2 = "<<< RSI Settings >>>";
extern int RSI_period = 10;
input my_price RSI_price = F;
extern string SETTINGS3 = "<<< CCI1 Settings >>>";
extern int CCI1_period = 100;
input my_price CCI1_price = A;
extern string SETTINGS4 = "<<< CCI2 Settings >>>";
extern int CCI2_period = 3;
input my_price CCI2_price = A;

//+------------------------------------------------------------------+

bands1[i]=iBands(Symbol(),0,BB_period,BB_deviation,BB_shift,BB_price,MODE_UPPER,i);
bands2[i]=iBands(Symbol(),0,BB_period,BB_deviation,BB_shift,BB_price,MODE_LOWER,i);
rsi[i]=iRSI(Symbol(),0,RSI_period,RSI_price,i);
cci1[i]=iCCI(Symbol(),0,CCI1_period,CCI1_price,i);
cci2[i]=iCCI(Symbol(),0,CCI2_period,CCI2_price,i);