Trailing Stop question

 

Hi, I need a little help with a trailing stop.

I want to add a narrow trailing stop to an EA, but I need some help to code it, need to be automatic and adjust the TS just with the brokers limit.

Example, on IBX, SL or TP you set must differ from market price by a least 5 pips on GBPUSD. and they vary on news time.

But on NortFinance, SL or TP you set must differ from market price by a least 10 pips on GBPUSD.

Now how I can make the EA to ask the broker server the minimum amount of pips to place the SL ?

I checked the MQL4 Documentation without luck. Thanks for your help

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