Adding a shape to a map dynamically

[Ben Tuttle]

Hi all-
I'd like to overlay a polygon on my map based on coordinates input
form a form. I'm wondering what the best way would be to do this.
My first thoughts were to either add a layer dynamically as an inline
feature or perhaps to create a shapeObj (not sure if this will work as
expected) and draw it. Any thoughts on the best way to do something
like this?