For this, I salute Till Warweg.  I am simply passing along what he told me.

In WAA, all of the code you write for a website goes into a DLL.  Consequently, if you wish to eval a codeblock which will be macro compiled at runtime, and said codeblock contains functions you have written, you will need to take an additional step so that the WAA executable will be able to locate your function.  Here is what Till told me: 

The problem actually is very simple: the WAA loads your DLL using a prefix. This allows the WAA to define separate name spaces for its package DLLs.
 
Therefore, in order to make your code block work, you've got to put the DLL prefix in front of the function call. Otherwise, the function won't be accessible to macro-compiled (i.e. dynamic) code.
 
Example:
 
  (...)
  cCb := "{|| MYPACKAGEAssetName()}"
  Eval( &(cCB) )
  (...)
 
I hope this helps.
Best regards,
  Till Warweg
  Alaska Technical Support
 
And, yes, it did very much help.Thank you, Till.