How to create procedural objects from files?

Hey guys,

I'm a little stumped here. I want to create a game object (sphere, cube etc) from variables (coordinates) I get from a text file (1 string for each coordinate with xyz values, velocity etc) that's constantly updated. Meaning my object could change (position, shape, velocity etc).

Now, 2 questions, how do I create objects from the coordinates? So far I've only found something called Procedural Primitives, but that seems awefully complicated for a simple cube or sphere.

And, how am I able to constantly read the file and update my objects? Do I simply put the function in FixedUpdate() or Update()?

Hope somebody can help, have a nice day.