setup

Question

i want to perform this step.
9.Add a new custom action to the Custom Action Table:

Name - MyPIDChecker;
Type - 1; Source - VerifyPIDDll; Target - VerifyPID
but i not understand what is i want to write for name.
MyPIDChecker means what?is it name of the function or any thing else.
as VerifyPIDDll is the dll name.