In a Commander game, you may send Iname to the Command Zone instead of exiling it during the resolution of its ability. If you do, its ability still works. Iname’s ability only requires that you attempted to exile it, not that it actually gets to the exile zone. This is similar to how destroying a creature (with, for example, Rest in Peace) doesn’t necessarily ensure that creature will end up in the graveyard; it just so happens that the action of exiling something and the exile zone both use the same word: “exile”.