So if I understand it correctly you have the following:
You start with 1-10 objects named Item and you want to store the information of all these in 1 object named Item_ws, using 10 attributes?
Best thing to do is probably to make an enumeration for each of the 10 objects, iterate over the list of objects and in there you split it up based on the enumeration. For the enumeration Item_01 you set a change object on Item_ws for Class_01 and insert the information. You can then use this for each enumeration option.