custom fields

I have a custom field that is an Multiselect field type. I am having with the option values where it is truncating my value when it uses a comma or slash. I realize that is probably due to the fact that commas are also used to seperate values and slashes are used to seprate the values for tick filers so when I have a value that is Pier / Marina/Pier / Marina it thinks it truncates it to Pier instead of keeping the value Pier / Marina. The reason I need to keep the commas and slashes in the title is that the data needs to be exported to a client and the values must match their categories in their database. Is there a way to be able to keep commas and slashes in the values of a custom field?