Mechanism to filter out alerts from an Indicator bought from Market

Hello,

I'm looking for a mechanism to filter out alerts from an indicator I bought from mql market.

I want the mechanism to give LONG or SHORT signals only when the trend is UP or DOWN respectively. It can be a script or indicator or whatever works with MT4.

The timeframe I use is M30.

I use the following free indicators to filter out alerts. I can share the indicators with code if you need.

• 200 EMA
• Forex Freedom Bars [Indicator repaints since it is MTF indicator - any MTF indicator repaints]

• MTF MACD      [Indicator repaints since again it is MTF indicator]

The Filters Required:

• Uptrend: Only when price is above 200EMA or H4 FFB shows uptrend, VJ sniper should give LONG signals.
• Downtrend: Only when price is below 200 EMA or H4 FFB shows downtrend, VJ sniper should give SHORT signals.

--> Filter 2: MTF MACD (H4)

• Uptrend: Only when the MTF MACD (H4) is greater than (i.e. above) the signal line, VJ sniper should give LONG signals.
• Downtrend: Only when the MTF MACD (H4) is lesser than (i.e. below) the signal line, VJ sniper should give SHORT signals.

• VJ Sniper indicator parameters should be modifiable.
• MTF MACD indicator parameters should be modifiable.
• It is ok to have all the indicators on the chart, as part of this script, or I can apply those additionally.
• I need the source code preferably.
• I will test the stuff extensively before accepting, so I will take at least a couple of weeks for testing it.