how to show the distinct values from reports database table in a dropdown field of stateless form

how to show the distinct values from reports database table in a dropdown field of stateless form

how to show the distinct values from reports database table in a dropdown field of stateless form... i was getting error when i used code example as given here https://reports.wiki.zoho.com/Creating-Data-Entry-Forms-for-Zoho-Reports-using-Zoho-Creator.html#check%20data%20in%20zoho%20reports by prameena>>>