QSI Lagrange Polynomial “Flexi Trend Line” MQ4 Indicator – The first option is !siLagrange – automatically detects the maximums/minimums of the points and creates the polynomial on their basis
The second option is !siLagrangePnt – creates the polynomial based on the points specified by the user. The points are set using the “Arrow” tool.
Make sure their names match the parameter specified in the indicator.