I have been having an issue getting a slider to control this equation. I would like a 2D Slider that moves from ymin to ymax on the vertical and xmin to xmax on the horizontal. Most likely the ranges from min to max on both of these will be -5 to 5 or so.

Can you take a look at what I have to see how I could improve it?

f[u_, v_] = {u - (u^3/3) + u v^2, v - (v^3/3) + u^2 v, u^2 - v^2};

Manipulate[
 ParametricPlot3D[f[u, v], {u, xmin, xmax}, {v, ymin, ymax}, 
  MeshStyle -> Thickness[0.001], 
  BoundaryStyle -> Directive[Black, Thickness[0.004]], 
  PlotPoints -> 25, ColorFunction -> "BlueGreenYellow", 
  ImageSize -> 800, AxesLabel -> {x, y, z}, PlotRange -> {All, All}, 
  LabelStyle -> Directive[Black, Medium, Bold]], {{xmin, -2}, -5, -1, 
  1}, Dynamic[xmin], {{xmax, 2}, 1, 5, 1}, 
 Dynamic[xmax], {{ymin, -2}, -5, -1, 1}, 
 Dynamic[ymin], {{ymax, 2}, 1, 5, 1}, Dynamic[ymax]]

Attachments: