Question method returns wrong values on specific system (win 11 issue?).

I am using this method to extract min/max values from a string and generate a random value. the string format is like this [value1,value2]. It works perfectly on the two win 10 systems that i tested the game on, but in a third system with win 11 it only returns non decimal values. example : This string is inserted as an argument "AlterWeaponPower[0.05,0.15]". in the first two systems it returns a number between 0.05 and 0.015. in the third system it returns a number between 5 - 15.

what could be the cause of this madness?

Code (CSharp):

1.      float ExtractValue(string effect)
2.      {
3.          float finalValue;
4.          int indexA;
5.          int indexB;
6.          float[] values = new float[2];
7.          indexA = effect.IndexOf('[') + 1;
8.          indexB = effect.IndexOf(',');
9.          values[0] = float.Parse(effect.Substring(indexA, indexB - indexA));
10.          indexA = effect.IndexOf(',') + 1;
11.          indexB = effect.IndexOf(']');
12.          values[1] = float.Parse(effect.Substring(indexA, indexB - indexA));
13.          Log.current.SetText(effect+ "<br>"+"min : "+values[0] +"<br>" + "max : " + values[1]);
14.          finalValue = RandomizeValue(values[0], values[1]);
15.          return finalValue;
16.      }

 

Thanks for the answer. I ended up manually setting the locale at the game's startup.