Session not returning the saved data on page refresh

I'm using session to store some data. I've a session named searchData, that is an array. it is having values

Array ( [Event] => 5 [Hall] => 5 [Date] => 2019-06-25 [Time] => Array ( [0] => Day ) )

I'm trying to add another array of values into the existing array, after adding the values it is returning the new values inside the array like below

[searchData] => Array
                (
                    [event] => 5
                    [hall] => 5
                    [date] => 2019-06-25
                    [time] => Array
                        (
                            [0] => day
                        )

                    [package_id] => 1
                    [price] => 6300
                    [advance] => 3000
                    [selectedPrice] => 3000
                    [add-on] => Array
                        (
                            [5-id] => 5
                            [5-price] => 100.0000
                            [5-count] => 1
                        )

                )

when I refresh the page and print the values in session the newly added array is not showing.

Here is the code used for adding the array of values to existing session.

    $request->session()->put("searchData.add-on.{$addOn->id}-id", $addOn->id);
        $request->session()->put("searchData.add-on.{$addOn->id}-price", $addOn->price);
        $request->session()->put("searchData.add-on.{$addOn->id}-count", $request->count);

in my config/session.php i've changed the below section

'expire_on_close' => true,