Also what is the difference between The bar opens below Moving Average and The positions opens below Moving Average?

The bar opens below Moving Average means that the Open price of the current bar is lower than MA.

If you use LTF for the MA, the Open price of the LTF data series must be lower than MA.

The positions opens below Moving Average means that the price you have set in the Opening Point of the Position slot is lower than MA.

If you open a position at Bar Opening, both rules will do the same because the position open price will be Bar Open.

If you have some indicator in the opening point slot, for example Pivot Point, the Pivot Point must be lower than MA at the moment of the entry.

How can we use higher moving average than 200 in Forexsb?

Download (or copy) the MA code form our GitHub repo: Moving Average

Change line 98 from:

IndParam.NumParam[0].Max = 200;

To:

IndParam.NumParam[0].Max = 300;

Place the changed file in the Indicators folder of your User Files. FSB Pro will override the included indicator with this new copy.

Also what is the difference between The bar opens below Moving Average and The positions opens below Moving Average?