Each alert signals the beginning of a new trend. Bullish/Flat Trend is when any of the two happens and the previous trend was . Bearish/Flat Trend is similar, except the previous trend in this case is . I made those two in case the user wants to exit a position based on any change of previous trend including sideway (flat).
There is the option to change the visuals. Bar will show colors on the candles, and Chart on the background.
When creating alerts, you must choose "Once Per Bar". Also, all signals use previous source data. So when the color changes, it's permanent.
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