After writting a package exit that has two functions: Create package and Modify package,
the modify is not working as expected.
The first action is a CREATE PACKAGE and the second is a MODIFY PACKAGE. What this means is that
in order to have the second action called the exit needs to register for the PECBMBBE - 'before modify build' and PECBMBAF - 'after modify build' exit points in the package setup.