1.12.2 Making the Cauldron bigger over the config doesnt work (I changed it on my own Server)

[Snowplex152]

I changed up the Serverconfig of making to cauldron bigger to true ( cauldron { # Makes the cauldron hold 4 bottle per bucket instead of 3. Translates better to modded fluids. [default: false] B:bigger=true ) and on my Server if I now place a cauldron its still 3 bottle per bucket can you help me with that?