[GNC-dev] Stuck: Creating a distribution list

[Ralf Zerres]

Hey list

 I got stucked while hacking the new distribution list feature in
gnucash
may someone can give me a light, please?

my latest repro with the code in question is accessible on github
(https://github.com/rzerres/gnucash/tree/coowner)

I did summerize the intention of the routines in
https://github.com/rzerres/gnucash/blob/coowner/doc/property-management.md
And distribution lists are one peace in the puzzle to predefine
apportionable shares/percentage values to property units.
You may see the analogy to billing terms.

My problem:
When creating a distribution list assigned to a book
(GncDistributionList * gncDistribListCreate (QofBook *book) line 284:
the attributes of the struct are presetted as expected.

Then in line 289 i need to add an object  (addObj (distriblist).
The fuction call should  initialize a pointer to a _book_info structure
(line 105). Analog code is present in gncBillTerm.c and does work as
expected.
Now calling line 107: 

     book_info = qof_book_get_data (qof_instance_get_book(distriblist),
_GNC_MOD_NAME);

will not update as expected.  It stays NULL. And i have no clue to
that.

Is anybody able to explain why? Again, compairing this to gncBillTerm
where the book_info (there: bi) is filled in correctly.

thanks 
Ralf