Table MultiSelect Read Link

I’m attempting to make properties visible based on the entry in a Table Multi select.
My current issue is the child table doesn’t exist until the user saves the form. As a result I’m having difficulty reading the table multi select entry in my if statement.
What am I doing wrong?
Thanks
(I’ve followed the guide: Table MultiSelect Field)
Code: frappe.ui.form.on(‘program’, function(frm) {
if(frm.doc.program == ‘program_example’) {
frm.toggle_display([‘street_address_2’],0);
}
});