SIMPLE MQL4 Code

Creating this simple code for EA MQL4 :

tren=average[A](close)     (tren=Long term filter)
mml=average[B](close)     (mml= Short-term average for long operations)
mms=average[C](close)     ( mms= Short-term average for short operations)

// Conditions to enter on long positions
IF NOT LongOnMarket and close >tren and tren>tren[1] and close<mml THEN
BUY x CONTRACTS AT MARKET
ENDIF

// Conditions to exit long positions
If LongOnMarket AND close>mml and close>close[1] THEN
SELL AT MARKET
ENDIF

if not shortonmarket and close<tren and tren<tren[1] and close>mms then
sellshort Y contracts at market
endif

if shortonmarket and close<mms and close<close[1]then
exitshort at market
endif

Variable A
Variable B
Variable C
Variable X
Variable Y

variables that can change the values

thanks