The Hidden control is used to contain data in the Workflow that shouldn't be directly interacted with by an agent, and is often used in similar situations to Workflow Variables.
The Hidden control isn't visible to the agent at all.
This control is part of the Basic control pack, and will always be available.
How To
Add a Hidden control to the Workflow Page. The control's Default Value can be configured in the Options tab of the Field Properties, and Validation and Formatting can be applied if desired.
Notes
Hidden fields can be used to allow selectively offering data on particular Pages of a Workflow, as opposed to Workflow Variables which are available on every Page.
As agents can't directly edit Hidden fields, any change to their value has to be made by code (such as from a JavaScript - Button or Calculate), or from Field Linking in a data control (such as the External Data Source or Table).
Hidden fields are stored in tbl_Data, so are sometimes used to record the value of a Workflow Variable back to the database upon Workflow completion.
