A DynamicField is an input control whose rendered form is determined by the resolved value of its descriptorBinding attribute. The resolved value, discerned at runtime, is a UPL descriptor of a control that will be rendered in position the DynamicField. This allows you to change the type of input control displayed based on some business logic at runtime.

Listing 1: DynamicField UPL

!ui-dynamic:collateralReq
    caption:$s{Requirement}
    binding:requirement
    descriptorBinding:inputControl

Listing 2: Loan Application Page Bean

LoanApplicationPage pageBean = ...
pageBean.setRequirement(RequirementType.OPTIONAL);
pageBean.setInputControl("!ui-select list:requirementtypelist");