Passing IO through Business service to a WF

Hi:

Need some help in scripting ; From Business Service, I want to call a WF. The WF accepts Integration Object as  as the input  parameter.

How to populate the IO from the BS script and call the WF passing the input parameters?

This WF creates an asset record. The value of the asset fields are part of the IO/IC,

Can someone please provide me sample scripts  of how to populate the IO from the BS script and call the WF passing IO as the input parameters and possibly the explanation of the script.

Thanks in advance.