Vortex Indicator Single Line

Indicator line is simply obtained by subtracting Vortex+ line from Vortex- line. There is obviously no any difference from original Vortex indicator, original vortex has two lines and that one has only one. So if the indicator value is near zero, it implies a sideways trend. It is important to catch the indicator value while crossing 0.2 value above. Because, 0.2 value can be thought a border to overbought region which means that prices can turn back anytime. At this time, it is important to analyze the indicator line direction, if it changes direction downwards although it is above 0.2 value, it can mean to a trend direction change. In a similar way, -0.2 value can be thought a border to oversold region which means again that prices can turn back anytime. If the indicator changes direction upwards although it is below -0.2 value, it can mean to a trend direction change. These rapid trend changes are really important and valid for especially highly volatile markets such as, cryptocoins. In conclusion, positive indicator values with upward direction especially when greater than 0.2, means BUY or DO NOT SELL, aand negative indicator values with downward direction especially when less than -0.2, means SELL or DO NOT BUY.

So is this a sell or a buy?