Check for current users security role on bulk edit form

function FormOnLoad()
{
    var optCtrl = Xrm.Page.ui.controls.get("statuscode");
    var CMRole = CheckUserRole("System Administrator");

    if (Xrm.Page.ui.getFormType() == 6 && CMRole) {
        optCtrl.removeOption(100000000);

    }
}



function CheckUserRole(roleName) {
    var currentUserRoles = Xrm.Page.context.getUserRoles();
    for (var i = 0; i < currentUserRoles.length; i++) {
        var userRoleId = currentUserRoles[i];
        var userRoleName = GetRoleName(userRoleId);
        if (userRoleName == roleName) {
            return true;
        }
    }
    return false;
}

function GetRoleName(userRoleId) {
    var selectQuery = "RoleSet?$top=1&$filter=RoleId eq guid'" + userRoleId + "'&$select=Name";
    var odataSelect = GetServerUrl() + selectQuery;
    //alert(odataSelect);
    var roleName = null;
    $.ajax({
        type: "GET",
        async: false,
        contentType: "application/json; charset=utf-8",
        datatype: "json",
        url: odataSelect,
        beforeSend: function (XMLHttpRequest) { XMLHttpRequest.setRequestHeader("Accept", "application/json"); },
        success: function (data, textStatus, XmlHttpRequest) {
            var result = data.d;
            if (!!result) {
                roleName = result.results[0].Name;
            }
        },
        error: function (XmlHttpRequest, textStatus, errorThrown) {
            //alert('OData Select Failed: ' + odataSelect);
        }
    });
    return roleName;
}