It's working as normal from my end. The value is 0 to 1 based (0.25 is 25%) and is clamped between 0.001 and 1.000. What value are you trying to change it to?

I try to change it to 1.0, i will try 0.99 to check

Well... Just checking :

if I input '1' => Displaying "1.00", close / reopen => Back to 0.25
if I input '0.99' => Don't accept and display back "0.25"
:(
in fact all input I try except '1' => Don't accept and display immediatly back "0.25"

I try other numeric parameter value => All the same : don't accept my input and immediatly back to initial value

I found a clue !
=> I was in french localisation then my decimal separator is "," and not "." then your script probably don't understand the values

Finaly i'll check all the numeric parameters value :
if I input an integer it display the number but after reopening the journal back to the initial (default ?) value . (at this time I supose the integer value is converted to decimal one like 90.00 and then fail)
If I input a decimal value, immediatly back to the former one.

(check boxes works fine)

Well, if you want to check it yourself, my server is at 85.190.166.170:32330

I can give you admin pwd in private.

There's checks to ensure the value entered are numerical. If not, the mod will revert them to defaults. Being an american made engine, it might be an issue with the unreal engine itself. The "is numerical" check for strings and text might be exclusive to a US or UK keyboard.

I'll come have a look. Maybe me entering it from my UK keyboard will allow it to save lol

Hum...If it was a server side process...I have to temporarly change server localisation to 'english'.

But let's try with client side uk keyboard. I send you de admin pwd.

Well I try :

- Server French / Client French => Not working
- Server English / Client French => Not working
- Server English / Client English => WORKING
- Server French / Client English => WORKING

=> Until Unreal Engine (or Burgesssssss) find how to deal with localisation, to change Immersive Taming parameters, temporary change your Ark Client to "English".