Manually set couchbase document limit

Is there way i can manually set the limitation of document from 20MB to 1MB?

@Generalomosco you cannot set the limitation yourself.

https://docs.couchbase.com/server/5.5/clustersetup/server-setup.html has the details of limits

That requires changing a constant with in the source code and recompiling the code. @mikew can confirm

So, how can i go about that getting the source code or It is modified by couchbase eng.?