NEED A Grids EA with martingale, ( prefer a developer with previous job experience with grids and martingale， Chinese speaking even better , 最好是讲中文国语)

1. The idea of trading system is as follow:
This system mainly consistence of two parts: grids and martingale style management
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<1, GRIDS.  The trading system is for any symbols on real account or demo. When price reached a certain level (manually set up with different symbols), the grids will be open as: grid base level, and +- grid 1, +-grid2, +-grid3, etc. the distance of the grids is adjusted from time to time for different symbols. How many grids is also adjusted every time before attach the EA to a chart. 

<2, TRADING SIZE. There should be two options for trading size. ( should be able to tick one option only before the EA attach to a chart)

Option 1, by fixed volume .  increasing trading size when price reached higher/lower grid level by fixed volume, such as: 0.01, 0.02, 0.03, 0.04 , 0.05 etc. ( should be adjustable, if I set up as “increased by 0.01”, then the first trade at grid+-1, the size would be 0.01,  2nd trade size at grid +-2 would be 0.02,  3rd trade size at grid +-3, would be 0.03,  4th trade size at grid +- 4, would be 0.04. If I set up “increased by 0.00, then, 1st trade size would be 0.01,  2nd trade size would be the same as 0.01,  3rd trade size also 0.01,  4th trade size also 0.01 etc . 

Option 2, The Martingale style.  The martingale multiplier should be able to set with different number, if set as 1, trading size at 1st trade, 2nd trade, 3rd trade etc is with same value , such as 1% of account equity in dollar term.  If the multiplier set as 2, the trading size will be doubled at higher/ lower grid level, Such as: 1st trade 1% of equity, 2nd trade 2%,  3rd trade 4%,  4th trade 8% of the account equity.

2, the EA should have adjustable 3 functions: (tick one option before the EA attach to a chart)
   only long, only short, long and short.