Overview
Key/value storage is a common facility for objects, programmatically stored as key/ value pairs and accessible from anywhere within JavaScript. Unlike global variables and Flow variables, which accept only string values, you can add any object to the key/ valuestorage.
To store an object
// you can store anything in etlConfig
etlConfig.setValue("unique key", someObject);
Access a previously stored object
// use the same key that was user in etlConfig.setValue(...)
var obj = etlConfig.getValue("unique key");