How to set connection option globally?

I need to add a connection parameter in the "options" tab for Mysql db connection inside transformations. I want to define the database connection once in a transformation that sets this connection based on an external config file. I can set the option in the connection of this transformation, but it is not shared to other transformations executed later in the job. I can set connection properties like IP, user, password and port as variables. Is the same possible for the connection option?

Any other way to set connection option globally for the entire program?