Problem reading a char or string

Projects Programming
2 
      char customKey = customKeypad.waitForKey();
      if (customKey)
      {
        Serial.print(customKey);
        referencePDU[n] = Serial.read();
        n += 1;
      }

So, if there is something other than zero read from the keypad, read a character from Serial.

Is that what you mean to do ?