expression builder switch()

Via the Expression Builder, I'm using the switch() program flow function to handle my data. I can't seem to figure out how to do the "else" or "default" part of it. Anyone have a clue? Ex:

Switch(
Fields!test.value = 1, "One",
Fields!test.value = 2, "Two",
Fields!test.value = 3, "Three",
)

But what if Fields!test.value is not either 1,2, or 3, how would you set the "else" or "default" part within the switch statement?

Add a condition at the end which always evaluates to true.

Switch(
Fields!test.value = 1, "One",
Fields!test.value = 2, "Two",
Fields!test.value = 3, "Three",
1=1, "Default"
)