2 demical places in temperature setpoint in touch visu

[AEK]

Hi Everyone!
in touch visu we have setpoint with status objects
both have 2 demical places in vis params, step is set to 0.5
but when we click on "+" or "-" button we see only 30 or 30.5 values
we want to see 30.00 and 30.50 values

in html tree  we have this line
<input class="spinner-value" step="any" type="number">

if I will change it to
<input class="spinner-value" step="any" type="float">
value become to 30.00.
How can I save that change LM