DEFAULT_VALUE
--------------
Copies an indicated value to an indicated variable if the variable's current value is NULL.  
If the variable's current value is not NULL, DEFAULT_VALUE does nothing. 
Therefore, for text items this built-in works identically to using the COPY built-in on a NULL item.  
If the variable is an undefined global variable, Form Builder creates the variable. 

Syntax

PROCEDURE DEFAULT_VALUE
  (value_string  VARCHAR2,
   variable_name  VARCHAR2); 
Built-in Type   unrestricted procedure 
Enter Query Mode  yes 

Parameters

<i>value_string</i>	A valid VARCHAR2 string, variable, or text item containing a valid string. 
<i>variable_name</i>	A valid variable, global variable, or text item name.  
The data type of the variable_name is VARCHAR2.  Any object passed as an argument to this built-in must be enclosed in single quotes.