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## To Define a Form Attribute

1. Specify a developer form function name and any optional argument string (form function parameters) in the Default Value field of the form Attribute property page.

2. The default value must be entered using the following format:

    	function_name:arg1=value1 arg2=value2 ...argN=valueN

The value of argN can be a text string, enclosed in quotes (" ") or can be token substituted with another item type attribute in any of the following ways, where `&item_attr` represents the internal name of the item type attribute:

- `argN="&item_attr"`

- `argN="Value &item_attr"`

See: To Token Substitute an Attribute.

> Note: If you are defining a message attribute of type Form, you can also include a special token in your argument string called &#NID which Oracle Workflow substitutes with the notification ID of the runtime notification.

3. If your form attribute contains an argument string, you must adhere to the following restrictions:

- You cannot token substitute the value of argN with another item attribute of type Document.

- You can token substitute the value of that argument string with another Form attribute or URL attribute, however, the argument string for the other attribute is not further token substituted.

4. Choose OK when you are done.

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