dynamic drop down list in Adobe forms

I have created a drop down list using enumerated drop down list from webdynpro native tab and binded in the object palette by giving $record.sap-vhlist.DESCR\.DATA\.FIELD.item[]* in the list items dynamically.DESCR is the field in the internal table into which i fetched data from the database table .I have written this code in a BADI.I dont know whether my form's display type is activex or native? I am not getting any values in the drop down list.can anybody please tell me what might be missing and how should i know whether my form is ActiveX or Native?

My form is called from portal so i have used BADI to connect portal to form