Direct Input +/- Custom min max value

[Maxence]

Use this Custom JS, change addresses and additional class (setpoint in this example) as needed. Note that it will only work when "show control" is enabled.

Code:

$(function() {
  if (typeof grp != 'object') {
    return;
  }

  var minobj = '32/1/5';
  var maxobj = '32/1/6';
  var el = $('.setpoint').find('.control-spinner');

  function setminmax() {
    var min = grp.getvalue(minobj);
    var max = grp.getvalue(maxobj);
    el.spinner('setoptions', min, max);
  } 

  grp.listen(minobj, setminmax);
  grp.listen(maxobj, setminmax);
});

Hi, 
This custom JS work fine but i have one problem. 
When i set a object with this additionnal class, i can't change setpoint by 0,5 step. Only one by one.
I modifiy this JS for add one decimal, but i can't find parametre for change this step..

Any ideas ?

Thanks.
BR
Maxence