TXFAInstancePresentation.AddInstance

Unit: HPDFXFAPresentation

function AddInstance(const Selector: AnsiString): Boolean;

Appends a data group for a repeatable subform, initializes its bound fields from template defaults, assigns fresh identity, and enforces occurrence and creation budgets

See Dynamic XFA Instance Presentation for binding and selector rules, supported event syntax, budget defaults, transactional publication, persistence, painting, and compatibility boundaries