Hi all! I am trying to create a multiselect field in my suitelet where I need to list around 3k options, but I want to make it searchable, so that when user types smth the search will run and display appropriate select options. Can you please advice on how to build a multiselect field (or text area field with selection options) similar to one in the picture below?

To get that search feature you are talking about you need to source your select field. So say i wanted to have my select field be all my customers i would create it like this

form.addField({
 id: 'custpage_customer_list, 
 label: 'Customer List', 
 type: serverWidget.FieldType.SELECT, 
 source: 'customer'
})

simple as that, thanks!