How can i update a jenkins job using the api

Question

I have to create/update a jenkins job using its api because all of my jobs are using parameters which are also used by other scripts and I am trying to centralize the script

Answer 1

in case anyone else is also looking for the same answer,

It appears the solution is far easier, all you have to do is update the config.xml and post the updated config.xml back to jenkins and your job will be updated.