To expose an attribute in Flow Builder, define a corresponding design:attribute in the component bundle's design resource. Keep
these guidelines in mind when defining design attributes for flows.
Required Editions
Supported Attributes on design:attribute
Nodes
In a design:attribute node, Flow
Builder supports only the name, label, description, and
default attributes. The other attributes, like
min and max, are
ignored.
For example, for this design attribute definition, Flow Builder ignores
required and placeholder.
<design:attribute name="greeting" label="Greeting" placeholder="Hello" required="true"/>
Calculating Minimum and Maximum Values for an Attribute
To validate min and
max lengths for a component attribute, use a flow formula or the component's client-side
controller.
Modifying or Deleting design:attribute
Nodes
If a component’s attribute is referenced in a flow, you can’t change the
attribute’s type or remove it from the design resource. This limitation applies to all flow
versions, not just active ones. Remove references to the attribute in all flow versions, and
then edit or delete the attribute in the design resource.
