Is it possible to select multiple options from a GUI listbox without using ctrl+select?

For multiple selection in listbox I know we have to set the max-min to be greater than 1. But by doing this I can only select using ctrl+select.

What I want is to select by clicking the option and I want it to stay selected until I click the same option to deselect it.

I'm not sure if I made myself clear...sorry for my bad english!

Thanks!