Command line setting from json file have no effect when CuraEngine is called from command line

[bitchmittenz]

When I try to center a part on the bed, or change the mesh_position arguments in the json file they don't seem to be doing anything.

The command line settings are enabled, and I even tried inputting the commands in the call using <-s center_object=true> but even then nothing changes. I also tried changing other parameters within the json and they update fine, however the command line settings are not being taken into effect.

Is there something I am doing wrong or something I am missing here?

Platform: Ubuntu, using Cura 4.13.0-1

The call I am making is: CuraEngine slice -v -p -j fdmprinter.def.json -o output_file.gcode -l input_file.stl --next"
-> I removed filepath things from the call, I have a generic fdmprinter profile I am trying to adjust

[JIAHAO-ZJ]

Can you show me your json file, I don't know how to set up json file

[bitchmittenz]

So after some more testing,
fdmprinterhrdv19.def.json
it doesn't seem to take into account ANY setting I am passing in manually. Am I missing something entirely?