Alter Type declared in package

Hello all!
I have a package that contains a locally defined type and I would like to modify the type to contain additional columns depending on the conditions.
So I have within the package spec ....
TYPE BaseRecType IS RECORD (
, item1 varchar2(10)
, item2 varchar2(10)
, item3 varchar2(10)
and depending on the method called would like to add other columns/attributes to the BaseRecType ...
procedure A() {
-> add attribute -> item4 varchar2(20);
procedure b() {
-> add attribute -> item4 number;
I'm not sure if what I am attempting is possible, but your help is greatly appreciated.
Thanks,
Shawn

Thanks for the quick response. Both of the suggestions below have been considered and may end up being the final solution, but this requires changes to multiple applications and as such can be pretty invasive. So before that step is taken I would like to know definitively that what I would like to do is not possible.

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Alter Type declared in package

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