I’m trying to figure out a way to configure my MQTT node’s Client ID , UserName, and Password, outside of the flow. My web portal assigns all the above and they are 32 to 64 characters long. The Client Id is used also within some of my subscription topics, and within an array of values. I would like to either use a file, or environmental variables to fill these credentials in when Node-Red Flows start. Don't want got to 4 different spots in my flows fill these in, for I will have 50plus devices. Thanks in advance for your idea’s and input.