Excel VBA Multiple Selection Listbox

[IGPOD]

I'm using the Form Control List Box via the Developer Tab and I'm trying to figure out a code to take my selections (multiple selection list box) and display them in a single cell with the selections separated by a comma.

When I right click the list box and navigate to the "Format Control" option, I get the option to make the list box a multi-select list box.

However the selections default to "0" and I cannot figure out how to get the selections to display into cell G9 as follows:

"SelectionItem1, SelectionItem2, SelectionItem5, SelectionItem7..." [based on selections; into a single cell]