Hello Suman,
I guess it is a bug in MII 14.0. The help doc has the getValue(name) still. However, the newer function is not present in the same. I guess it was not documented. I guess, the getValue(map, name) is a newer function which somehow replaced the older one.
I would suggest you to raise a support ticket. According to me, the getValue(name) and getValue(map, name), both should exist.
Regards,
Tufale Ashai.