The screenshot on the right shows how the User prompt resolver can be used within an Execute with event action to provide the 'Economic region' identified by text input as a reference object for the action block below (still empty in the image on the right)

• The Message in the User prompt resolver is completely determined by the All values of a dynamic enumeration resolver:
  
  

  • The user-defined dynamic enumeration 'Economic region' (REGIONS) is selected as the Type.
    
    

  • In the server context (e.g. in an event handling), only the 'Names' from the name field of the values contained appear in the string image of the list generated in this way. For the given purpose, these are abbreviations for regions that are understandable to the user regardless of any applicable localization.
    
    

• The concatenated Input object (type safe) resolver below transforms the text entered by the user into the type defined by the dynamic enumeration 'Economic region' (REGIONS). This ensures that the action block can check whether a valid input has been made, because if none of the 'Names' for enumeration values match the input, 'No value' ($null) is used as the reference object in the action block.

►NOTE◄ This configuration example solves the task of a selection decision more simply than a portal with a Combobox element. When using the User prompt resolver in a productive workflow, however, it should always be borne in mind that the server thread for the workflow is interrupted at runtime and remains occupied until the 'queried' user confirms their input, cancels the dialog or the Time out expires. The User prompt resolver should not be used if the input has to be queried more often and possibly by many users at the same time.

Text key
(selectable) →
↓

(ALPHA-3)
'BIH'
↓

(ALPHA-2)
'BA' →

The screenshot on the right shows the configuration for a section from an event handling in which the text key is available as an external reference object of an Execute with event action:

• The text key is initially saved in the variable countryCode to enable access in the Default value resolver (see below).

• The configuration for the Object resolver parameter aims to obtain the value addressed via the given text key from the Country dynamic enumeration as a temporary reference object for calling the portal (in the action block):
  
  

  • The Input object (type safe) resolver with the Type Country attempts a type conversion for the given text key, which succeeds if it matches the 'Name' (name) for a country. By default, this 'Name' corresponds to the ALPHA-2 code for the country. Otherwise, 'No value' ($null) is returned.
    
    

  • The concatenated Default value resolver is only evaluated at runtime if there is no Country value with the text key as 'Name' (name). A search is then made for a Country whose configuration feature alpha3Code matches the text key. The value configuration for the Default value parameter defines the required 'reverse search':
    
    

    • The All values of a dynamic enumeration resolver returns all Country values as a list (Land[]).
      
      

    • The Rule list resolver with an Entity property rule as a search criterion determines the (first) Country with the matching alpha3Code in the configuration, if available.

The 'found' Country is the reference object for the Open portal (Action) event action in the action block.