How can I create a smartObject for a serviceObject that use collection as parameter ?

Hello,

I define 2 parameters as collection for input in my ServiceObjet. I define 2 differents structure.

But when i try to create a smartobject to send the data to this service object I'm not able to define a collection as input for my method.
How can I send a collection to my method in my SmartObject ?

Thanks,
Bye