How to draw a graph of crossection with uncertainies showing by color

[Wile_E_Coyote]

Try with:

mg->Draw("A");
b1->Draw();
l->Draw();
mg->Draw("P");

[Anees_Khan]

still same graph

[Anees_Khan]

@Wile_E_Coyote

mg->Draw("A");
b1->Draw();
l->Draw();
mg->Draw("P");

thanks now working