If you're running a keyword test via script, especially in a data driven environment where the data dictates which test to execute, it would be useful to be able to get a count of the parameters on a...
OK... what I ended up doing is that, in the JScript extension, I constructed my objects as normal and then called JSON.stringify to convert the complex objects to JSON notation. That's the value then that I pass on to my JavaScript code where, the first thing it does is convert the JSON to JavaScript objects using JSON.parse. Now my arrays are working correctly and can do that "magic" explode thingie...