Can someone help please with this

I have an EA and I want to access 2 lines from an indicator within the EA the lines in the indicator are.

expression 1
if(iMA(NULL,0,Period(),1,MODE_SMA,PRICE_HIGH,i) > zigzag1 && iMA(NULL,0,Period(),1,MODE_SMA,PRICE_HIGH,i) != 0 && iMA(NULL,0,Period(),1,MODE_SMA,PRICE_HIGH,i) != EMPTY_VALUE) ExtMapBuffer2[i]=iMA(NULL,0,Period(),1,MODE_SMA,PRICE_HIGH,i); else ExtMapBuffer2[i] = 0.0;;

expression 2
if(iMA(NULL,0,Period(),1,MODE_SMA,PRICE_LOW,i) < zigzag1 && iMA(NULL,0,Period(),1,MODE_SMA,PRICE_LOW,i) != 0 && iMA(NULL,0,Period(),1,MODE_SMA,PRICE_LOW,i) != EMPTY_VALUE) ExtMapBuffer1[i]=iMA(NULL,0,Period(),1,MODE_SMA,PRICE_LOW,i); else ExtMapBuffer1[i] = 0.0;

I want to say in the EA
when expression 1 is true Buy & close sell if open
when expression 2 is true sell & close Buy if open

How can I do this?

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