Help needed with custom indicator

// you will need two external int variables in your EA called
// period1   and period2
//
// Also note, this will activate at the close of the crossed MA.
// if you want to have the EA activate a order during the current bar, 
// change the shift to 0 and 1  instead of 1 and 2 



double nowMA1  = iCustom(Symbol(), 0, "multyMA", period1, 0, 1);
double thenMA1 = iCustom(Symbol(), 0, "multyMA", period1, 0, 2); 
double nowMA2  = iCustom(Symbol(), 0, "multyMA", period2, 0, 1);
double thenMA2 = iCustom(Symbol(), 0, "multyMA", period2, 0, 2);

if ( nowMA1 > nowMA2 && thenMA1 < thenMA2 )
   {
      Buy logic
   }
   
if ( nowMA1 < nowMA2 && thenMA1 > thenMA2 )
   {
      Sell Logic
   }