# <netui-data:messageArg> Tag

This tag provides a parameter value to a message schema.

## Syntax

<netui-data:messageArg
value="string_argument" />

## Description

This tag provides a parameter value to a message schema.

The message schema is defined by a <netui-data:message> tag.

## Attributes

value | A string value for the argument.
Required | Supports runtime expression evaluation | Data bindable
Yes | No | No

## Sample

For an example that uses the <netui-data:messageArg> tag, see the <netui-data:message> description.

## Related Topics

<netui-data:message> Tag

How Do I: Customize Message Formats in Page Flows?