Join node and Table ui problem

[nikza5566]

I had a problem when I use a join node to make an array JSON form.
I have 5 function node that write payload to a table

msg.payload =
    { 
    "Load": "Lamp",
    "Usage": true,
    "Up-Time": "00:00"
    };

^This is a 1 of 5 output before join node.
So if I push a start button and stop it will appear 2 same load but different state in one table.

How can I fix this to make it disappear after I push stop that load one time?