OData Query

oUrl = ""addressserver/.../SystemUserRolesSet$select=RoleId&$filter=SystemUserId eq guid'{guidnumber}'""
$.ajax({
type: "GET",
async: false,
contentType: "application/json; charset=utf-8",
datatype: "json",
url: oUrl.toString(),
beforeSend: function (XMLHttpRequest) {
XMLHttpRequest.setRequestHeader("Accept", "application/json");
},
success: function (data, textStatus, XmlHttpRequest) {
oData = data.d;
},
error: function (XmlHttpRequest, textStatus, errorThrown) {
alert("erro: " + errorThrown);
}
}); ...