Need help diagnosing one line of code

I and using javascript

I want to set a rectangular selection.

both of these throw an error and i can't figure why;

app.activeDocument.selection.select([3111.62,936.63,5300.89,4025]);

or

var coverRegion = [3111.62,936.63,5300.89,4025]

app.activeDocument.selection.select(coverRegion);

if I change this to crop it works though. According to the javascript reference guide it the same kind of array of coordinates (left, top, right bottom)

app.activeDocument.crop([3111.62,936.63,5300.89,4025]);

I have tested this as just a single line of code in it's own document and still get "Error 1220: Illegal Argument"

I'm pulling my hair out here.