How to retrieve items selection with "Multiselect = true"

Hello,
What is the right way to retrieve the selected values form a TIWCGJQMSelect with its "Multiselect" property = true ?
Thank you,
Davide
What is the right way to retrieve the selected values form a TIWCGJQMSelect with its "Multiselect" property = true ?
Thank you,
Davide