Ever wanted to add a value between values in a choice field? This is possible with a Dynamic Choice Field :

>Formula in the MoveUp button:
Number := Number - 1.5;
let c := 1;
for i in (select Listvalues) order by Number do
i.(Number := c);
c := c + 1
end
>Formula in the MoveDown button:
Number := Number + 1.5;
let c := 1;
for i in (select Listvalues) order by Number do
i.(Number := c);
c := c + 1
end

Example available here: https://www.dropbox.com/s/xcw8a6zq6a736su/Ordering%20Dynamic%20Choicelist.ninox?dl=0

Steven