BATCH UPLOAD WITH EXPORT VALUES TO DROPDOWN LIST FIELD

Lovely Members, I kindly need a help.

i am creating an interative form and it required  using a dropdown list.

i have 3500 items to add to the dropdown field.

i used the sample script below, but i was alerted that the file is too large.

var ddField = [["one", "Yes"], ["Two", "no"]];
var field = this.getField("code");
field.setItems(ddField);

i also used the import data method on the menu but the data could not be loaded.

i need to load the 3000+ items with the export values.

Any suggestions.