In the Object Navigator,
expand the Layout Model
node, then expand the node
that contains the object you
want (in this case the SALES
field).
Double-click the PL/SQL
icon next to the field to
display the PL/SQL Editor.
In the PL/SQL Editor, type
or edit the PL/SQL code for
the format trigger, and click
Compile. If necessary, click
an error to navigate to its
location in the source code.
When the code compiles
successfully, click Close.
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