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Expression field

An expression field allowing the user to compute new data based on form state.

Form Expression Field Symbol

Configurable properties​

  • Key: Binds the field to a form variable, refer to data binding docs.
  • Target value: Defines an expression to evaluate.
  • Compute on: Defines when the expression should be evaluated. Either whenever the result changes, or only on form submission.
  • Deactivate if: Expression to disable the expression.
  • Columns: Space the field will use inside its row. Auto means it will automatically adjust to available space in the row. Read more about the underlying grid layout in the Carbon Grid documentation.
info

The expression field is a simple way to create intermediary data which may be re-used within your form, or further down your process. To effectively use this component, a good understanding of FEEL is required.