Subform foreign key column not populating from masterrecord

[clinterman]

I have a form with
pickuppointgroup containing ID, Name

subform
pickuppointgroup_pickuppoint containing ID, pickuppointgroup_id, pickuppoint_id

form
pickuppoints containing ID, name, city

On the subform I registered Primary key ID, Foreign key pickuppointgroup_id. The subform has 2 hidden fields d_id (select '#id#') and pickuppointgroup_id. When inserting a new record in the subform the pickuppointgroup_id stays blank. How can I get this populated, with the pickuppointgroup_id of the masterrecord?

[admin]

clintername,

Remove the hidden ids nuBuilder will populate them automatically.

Steven