hm, worked for me
var contactEntry1 = {
__metadata: { type: "ODataDemo.Product" },
ID: 11,
Name: "Breadbutter Jam",
Description: "Whole",
ReleaseDate: "1994-01-01T00:00:00",
DiscontinuedDate: null,
Rating: 5,
Price: 3.5
};
var contactEntry2 = {
__metadata: { type: "ODataDemo.Product" },
ID: 12,
Name: "Sandwich",
Description: "Grain Bread",
ReleaseDate: "1992-01-01T00:00:00",
DiscontinuedDate: null,
Rating: 4,
Price: 4.5
