Create a EA using custom indicator and template

I'd like to build an EA base on my custom indicator and template. 

1. Buy when price go below blue line of TMA bands and then the Super Trend Indicator turn from red to green and the Laguerre-ACS indicator is below 0.15. Exit buy order when hit TP or Stop Loss. 

2. Sell when price go above purple line of TMA bands and then the Super Trend Indicator turn from green to red and the Laguerre-ACS indicator is above 0.85. Exit sell order when hit TP or Stop Loss. 

3. Optional Grid Function:

- If the Grid function is true: if price is not in our favor then open another order in same direction with increase lot size (initial lot size x lot size multiplier). The distance to open new order is in input parameter. Modify all order with the same Take Profit value. TP is calculated base on average price of all open order. 

- If the grid function is false: not open grid order, close possition when hit TP or Stoploss. 

4. Input parameter: stop loss, Take profit, trading time, trailing stop, grid distance, slip page, max spread,.......