MTF Strategy 2 hrs and 2 min

I have created this strategy based on 2 time frames MACD on 2 hrs and Supertrend on 2 mins, its not working with me, I believe it needs to be corrected, could you please help in adjusting it.

// VARIABLES

SL = 4

stepfactor1 = 1

stepfactor2 = 0.25

RR = 2

timeframe(2 hour, updateonclose)

MCD = MACD[12,26,9](close)

timeframe(2 minutes)

DM = DEMA[14](close)

PST = Supertrend[2,10]

// Conditions to enter long positions

IF MCD > 0 AND DM CROSSES OVER PST THEN

BUY 1 CONTRACTS AT MARKET

SET STOP   pLOSS   SL    //5

TP = RR * SL

SET TARGET pPROFIT TP   //10

ENDIF

// Conditions to exit long positions

If DM CROSSES UNDER PST THEN

SELL AT MARKET

ENDIF

// Conditions to enter short positions

IF MCD < 0 AND DM CROSSES UNDER PST THEN

SELLSHORT 1 CONTRACTS AT MARKET

SET STOP   pLOSS   SL    //5

TP = RR * SL

SET TARGET pPROFIT TP   //10

ENDIF

// Conditions to exit short positions

IF DM  CROSSES OVER PST THEN

EXITSHORT AT MARKET

ENDIF

// Stops and targets : Enter your protection stops and profit targets here

//====== Trailing Stop mechanism – start =====

trailingstart = (stepfactor1 * SL ) / pointsize

trailingstep = (stepfactor2 * SL ) / pointsize

//resetting variables when no trades are on market

if not onmarket then

priceexit = 0

endif

//case LONG order

if longonmarket then

//first move (breakeven)

IF priceexit=0 AND close-tradeprice(1) >= trailingstart*pointsize THEN

priceexit = tradeprice(1) + trailingstep*pointsize

ENDIF

//next moves

IF priceexit>0 THEN

P2 = close-priceexit >= trailingstart*pointsize

IF P2 THEN

priceexit = priceexit + trailingstep*pointsize

ENDIF

ENDIF

endif

//case SHORT order

if shortonmarket then

//first move (breakeven)

IF priceexit=0 AND tradeprice(1)-close >= trailingstart*pointsize THEN

priceexit = tradeprice(1) – trailingstep*pointsize

ENDIF

//next moves

IF priceexit>0 THEN

P2 = priceexit-close >= trailingstart*pointsize

IF P2 THEN

priceexit = priceexit – trailingstep*pointsize

ENDIF

ENDIF

endif

//exit on trailing stop price levels

if onmarket and priceexit>0 then

EXITSHORT AT priceexit STOP

SELL AT priceexit STOP

endif

//====== Trailing Stop mechanism – end =====