Be sure to read the comments section above to get the clarifications required to complete this request.
Here is code to display the label as described:
input alternateTickerSymbol = "/ES";
input maLengthOne = 3;
input maTypeOne = AverageType.EXPONENTIAL;
input maLengthTwo = 5;
input maTypeTwo = AverageType.EXPONENTIAL;
def maOne = MovingAverage(maTypeOne, close(symbol = alternateTickerSymbol), maLengthOne);
def maTwo = MovingAverage(maTypeTwo, close(symbol = alternateTickerSymbol), maLengthTwo);
def crossAbove = maOne[1] < maTwo[1] and maOne > maTwo;
def crossBelow = maOne[1] > maTwo[1] and maOne < maTwo;
AddLabel(yes, Concat(alternateTickerSymbol, Concat(" EMAx: ", Concat(maLengthOne, Concat("/", maLengthTwo)))), if crossAbove then Color.GREEN else if crossBelow then Color.RED else Color.GRAY);