Technical User Default Password

How to Change Default Technical User Password (Install)

hello, i've installed Bonita with Wildfly Community edition 7.6 on Ubuntu 16.4 and MySql but reading instructions, i`ve modified the both files to do that, but it doesn't works the files that i've changed are:
1.-: /setup/platform_conf/initial/platform_engine/


both files left with the same userName, i just changed the password but this doesn't works

can anybody give a little of help on this?

kindly regards.