Availability
UPDATE command
Syntax
$WBP$NumericValueToBeAdded
Description
This is a form field value prefix for doing
mathematical operation of addition with values of fields of numeric type. When
WBSP engine receives a WBF_tablefieldname form field value
with this prefix for database table field of numeric type, instead of replacing
the old value with new one, it will add new value to the existing one (so new
value stored in the database is
NewFormValue+OldDatabaseTableFieldValue)
Here's an example:
After running this example (and pressing the "Add 10 books" button), field Qty in updated record of table Titles will be increased by 10.