Dear,

First of all, I really thank you everyone here sparing no efforts to help the person like me.

Shortly, my model is like below.

reg Y X1 X2 c.X3##c.A##c.A
(== reg Y X1 X2 X3 A A^2 X3*A X3*A^2)

It'd be great if somebody let me know how to graph showing quadratic moderation-effect effectively.
I've been trying to find-out but,,,, Thank you in advance.

Lyon