how to merge a userdefined function with the library file functions

i made a copy of trainlm.m and renamed as shivlm.m with some modification of the program function. if i call the shivlm function i get errors. i am using matlab R2012b. what are the files i have to copy along withem to work.

[John D'Errico]

Sorry. You cannot move or copy toolbox files around and have them work.

[Walter Roberson]

This is a follow-up (duplicate, really) to http://www.mathworks.com/matlabcentral/answers/313579-i-created-a-copy-of-trainlm-algorithm-in-neural-network-to-shivlm-m-with-the-same-code-of-the-trainl