Moving averages

I have been doing REAL well lately using the moving averages indicator
5 and 10 periods…it seems too easy what am i missing?

it seems like when it crosses on a down candle time to get in and short
when it crosses on a up candle time to buy… as easy as that sounds i have
been doing this for the last week and half and 4 out 5 times i profit 15 to 20 pips after i stop out.

THE QUESTION: Is anybody having sucess with this indicator like this?