Hi Marco,
A TableRecords only lives client side, that is, in your browser. An extension lives only server side, on your platform server. There is no way you can have a server component do anything with a client side structure. That said, perhaps you only want to manipulate the data that's inside the TableRecords? In that case, you pass the List or Record List that is bound to the TableRecords (MyTableRecords.List) to the extension in a parameter.
If this is not what you mean, please explain, as you are not very clear in your intentions.
A TableRecords only lives client side, that is, in your browser. An extension lives only server side, on your platform server. There is no way you can have a server component do anything with a client side structure. That said, perhaps you only want to manipulate the data that's inside the TableRecords? In that case, you pass the List or Record List that is bound to the TableRecords (MyTableRecords.List) to the extension in a parameter.
If this is not what you mean, please explain, as you are not very clear in your intentions.