custom layout function

Currently, I am working on a script file. The flow is something like create a library, then create a cell, create a layout view in the cell and place the p-cell on the layout view.

While creating the library, tech library wasn't attached to the created library. To attach the tech library to my created library I am using the following skill macros:

absSetLibrary( <created library name> )
absAttachTechLib( <Tech Library Name> )

While executing the script file I am getting the following error on CIW:

*Error* eval: undefined function - absSetLibrary

What is the correct way to attach the tech library to the library I am creating?