Thank you, I already done this ReImPlot[{V0,V1},{[Sigma],210^2,210^4}], but it seems that ReImPlot can't see that there is a dependency between V and sigma in my program, so this function plot horizontal constant lines, but when I've inserted whole equation in ReImPlot, like the values for theta, Y, I've managed to get plot like yours. How did you do that without inserting whole equations? My guess is that it got something to do with the first line in your code: <a href="mailto:Remove@Evaluate[Context[]">Remove@Evaluate[Context[]<>"*"], am I right?
