Yes, I agree with @ArjenEX because determining the limit value is crucial in setting up the conditions for the new column.
If you want to do it manually, you can use a Rule Engine node and write expressions like:
" $Data$ < 4 => 5
$Data$ = 4 => 10
$Data$ = 5 => 10
$Data$ = 6 => 4
$Data$ = 7 => 8 "