Problem with Toggle Switch Input

How can I set "data" as an array populated by the FOR loop? I need to be able to parse it similar to this:

  if (data[0] == '2'  )
  {
    int tmp = 4;
    if ( data[1] == '5' && receivedChars[2] == '5' ) {
      digitalWrite(tmp, HIGH);
    }
    if ( data[1] == '5' && receivedChars[2] == '4' ) {
      digitalWrite(tmp, LOW);
    }
  } // PIN