Automating Library Reference Change with Additional Parameters in New Library

Hello,

I am working on a schematic where I need to change the library reference of certain instances from one library to another. For example, in my library “ABC” I have an instance A1 that currently comes from library A. In library A, the cell has parameters w and l.

In the newer library B, the same cell A1 has parameters w, l, and an additional parameter xyz. What I would like to do is:

• Update the library reference for all occurrences of this instance so that they point to library B instead of library A.

• Retain the existing values of w and l from the old instance.

• Initialize the new parameter xyz as a variable (so that I can later sweep or change it during simulation).

I know this can be done manually through “Change Library Reference” in Library Manager and then editing the parameters in the instance properties form. However, since I have many such instances across my schematic, doing this manually is not practical.

Is there a way to achieve this using a SKILL script, so that the process of:

1. Changing the library reference,

2. Copying over the existing parameters, and

3. Setting the new parameter to a chosen variable name

…can be automated?

Any guidance, examples, or references would be greatly appreciated.

Best regards,
Azmaeen