Converting a STRING to a STRINGLIST

Converting a STRING to a STRINGLIST

I have a STRING that was created from a STRINGLIST, but after the STRINGLIST was reset, I need to go back in and turn the STRING back to the STRINGLIST.

Here is my code:

input.Extra1 = Extra2.toList();
input.Perm1 = Perm2.toList();


Extra1 is a STRINGLIST
Perm1 is a STRINGLIST

Extra2 is a STRING
Perm2 is a STRING

I get the following error:

The template variable Extra1 is of type STRINGLIST. But you are trying to update it with an expression of type LIST

Any ideas?