Simple answer is both yes and no:

No its not possible, because you would need to anticipate that move. You need to buy before that big candle happens.

Yes it is possible, if you go down to a smaller timeframe and start trading it as its breaking out upwards.

Edit: Price breaks over the MA 10 line, but it dosnt actually break above it until the candle finishes, right?

You dont know if price will close above or below, until the candle finishes.

if not onmarket and close < average[10](close) then
buy 1 contract at average[10] stop
endif

Something like the above achieves what you are saying you want to do.

You and Jebus 89 are correct Roberto – I was forgetting that we do not know what the MA[10] level will be in the next candle when we place the pending order at the end of the current candle. MTF is the only way then by checking the time frame we want the MA[10] in using DEFAULT and then for the trade to be opened in a faster time frame such as 1 second. more coffee needed!

This is the MTF version, try launching it from a 1-minute or 10-second TF:

// Definition of code parameters
DEFPARAM CumulateOrders = False // Cumulating positions deactivated
//
TIMEFRAME (15 minute, default)
// Conditions to enter long positions
indicator1 = Average[10](close)
c1 = (close CROSSES OVER indicator1)
// Conditions to exit long positions
indicator2 = Average[d](close)
c2 = (close CROSSES UNDER indicator2)
//
TIMEFRAME (default)
IF c1 AND Not OnMarket THEN
   BUY 1 CONTRACT AT MARKET
ENDIF
IF c2 AND LongOnMarket THEN
   SELL AT MARKET
ENDIF
// Stops and targets
// --- NOT ALLOWED --->  SET STOP pLOSS a pTRAILING b
//uncomment one of the following lines
//SET STOP pLOSS a
//SET STOP pTRAILING b