# Differential Equations – Using ParametricNDSolve with Manipulation

``````clear[Field, x, y];
field[x_, y_] = {-0.036 x E ^ x ^ 2 + 0.123 y, 0.123 x -0.087 y E ^ y ^ 2};
fieldplot = table[Vector[Field[x, y]/ (1 + norm[Field[x, y]]), Tail -> {x, y}], {x, -1,25, 1,25, 2,5 / 10}, {y, -1,25, 1,25, 2,5 / 10}];

clear[x, y, t, solns];

End time = 100;

Solns = ParametricNDSolve[{
x'
y & # 39;
x[0] == a, y[0] == b}, {x, y}, {t, 0, end time}, {a, b}]Manipulate[
show[FieldplotParametricPlot[{X[fieldplotParametricPlot[{X[FieldplotParametricPlot[{x[fieldplotParametricPlot[{x

{{a, -1, "x-start"}, -1, 1, Appearance -> "Labeled"}, {{b, -1, "y-start"}, -1, 1, Appearance -> " Labeled "}]
``````

I try to use it `Manipulate` change the values ​​of `on` and `b` in my `SOLNS` Equation, and use these values ​​as initial conditions for the differential equation that I solve. However, the curve is not displayed when I try to draw my function.

How can I have that? `Manipulate` Function update the variables `on` and `b` in my `SOLNS` Equation, and then represent this differential equation?