Table-ui , Sequence data change when Refresh

Dear node red

I Use example from "node-red-node-ui-table" = "no.4 Sending Commands".. I'm suit with "add one row @ top" button, because that button is show the last data that comed in the first line (e.g. First Row to the Last Row > 5,4,3,2,1)..

The problem is : when I refresh the page , the row is change to = Last Row to the First Row > 1,2,3,4,5


NODE QST 2

The question is :

  1. how to keep the row sequence from changing when we refresh?
  2. How to limit the data on the table(e.g. Max 50 Data), because I dont want the page become SLowly when too much data?

THANKSS