How to get the data Name from selection of multi select lookup?

Hi,
Can you please give more details on your business task, what end result you are trying to achieve?
In any case, I recommend reading articles about multiselect
https://academy.creatio.com/docs/8.x/no-code-customization/customization-tools/ui-and-business-logic-customization/element-setup-examples/components/set-up-multiselect-lookup-component
https://customerfx.com/article/invoking-a-multi-select-lookup-dialog-on…