I was trying to make a custom field that allows for multiple selctions. I can select multiple items but then when I click save it refreshes and only one item is selected. I was the listing to be able to select multiple items and display them in the custom category field on the page but it only displays one of the items and deselects the other items. I would prefer to do this with the multi-select box because I will be using the dropdown for searching. How do I go about doing this?