NEED HELP CODING INDICATOR INTO EA MQL4 MT4

Hi,  I have an indicator. Its called Traders Dynamic Index. When I put  it on a chart, I think it outputs 4 values which create a small graph. I want to be able to add this indicator in my EA so that when one of the values for example exceeds 60,  it does a buy order. I think I have to  use iCustom. Can someone please help me by sending snippets of the complete code I will have to use to do this.

Thanks