Hidden value

A value worked out on the server when the response is saved and never shown, such as the submitter email.

Stores: no answer. Can go: the form page. Field key prefix: hidden.

How it looks

The picture is the question’s settings panel in the builder, or where it sits in the builder.

Question settings for the Hidden value question

Options

Option	What it does	Kind	Default
Question label	The text the responder sees. On a page break it is the page title, on a panel the heading, on a button its text, on a consent its statement. Also available on a table column.	Text	Blank
Field key	The name expressions use: answers.<key>. Letters, numbers and underscore, not starting with a digit, unique in the form. Also available on a table column.	Text
Save answer to field	A custom field on the destination share that the answer is saved to on each submission file, so it can be searched and filtered. Also available on a table column.	A choice

Logic and validation

Each of these takes an expression, written by hand or with the logic builder.

Setting	What it does
Show this question when	Shows the question only while the expression is true.
Required when	Makes the question required only while the expression is true.
Valid when	Refuses the answer unless the expression is true.
Computed value (read-only)	A value worked out by the server from other answers; whatever is submitted is ignored.
Default value (editable)	Pre-fills the question; the responder can change it.