sending notifications without item key

hello

I need to send notifications without any wf processes/activities

just send some text

I tried code like this

        l_nid := wf_notification.Send(role_name, 'CS_MSGS', 'FYI_MESSAGE');

        wf_notification.SetAttrText(l_nid, 'MESSAGE_TEXT', p_text);

        wf_notification.Denormalize_Notification(l_nid);

it works

but now I need to send some very long texts

unfortunately MESSAGE_TEXT is limited to 2000 charecters only

how do I do this ?