Sometimes they do correspond but not always. It depends on how the coder creates the indicator. The mode is an mt4 concept, we just use it in our builder. This is a trick we use: Look at the code Look at the colors definitions: In your indicator #property indicator_color1 IndianRed #property indicator_color2 MediumSeaGreen #property indicator_color3 IndianRed #property indicator_color4 MediumSeaGreen Colorn uses the indicator signal n-1, so Color1 (indianred), uses signal mode 0 (SetIndexBuffer(0, ExtMapBuffer1)) and ExtMapBuffer1 is the signal for iCustom(NULL,TimeFrame,"Heiken Ashi",0,y) Using an indicator written by someone else could be challenging since one needs to find out which mode to use. When creating indicators with the indicator builder, it shows the mode and calculations so integration with the strategy builder is easier. Also, the import custom indicator function gives you hints on which mode to use.
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