Splitting columns with custom deliminator

Hi, I'm trying to split my column in my data flow and the data in the original column is formatted as, "Stretch Wrap & Strapping - Copy". I want to split this column such that the "Stretch Wrap & Strapping" is in one column and the other column reads, "Copy". I tried making my custom deliminator, " - " however the split column isnt working... any ideas on how to trouble shoot? Thanks!