Below is a picture of calculated purchasing power parity values for GBP/AUD which is currently 20+% undervalued. Does anyone know how to create a simple indicator where the PPP values are drawn as a line(stairstep line) in metatrader 4? Like in the picture below. I have all the data that I need to create a line for every pair that my broker offers but I don't know how to draw the data.
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