Set_block_property and execute_query

Question

I created two forms say f1 and f2. I have a button pb1 in f1, when I press pb1, the second form f2 is called.
Now in form f2, I implemented the trigger when_new_form_instance as follows:
set_block_property('users', default_where, 'id=:global.user_id');
execute_query;
The problem is that the query is not executed. If I replace the above two lines with:
select first_name, last_name into :user.first_name, :user.last_name
from users
where id=:global.user_id;
then this query executed. Anybody help me please?
By the way, if anybody could give me a simple form (detailed steps) to implement the following:
1) when the form first loads, it executes a query automatically.
2) a button "Save" to let me save changes on any fields (insert or update?).
Thanks a bunch.

Answer 1

Check if you have set the where clause in the block property of the form during design time ie. set the where clause in the blocks property sheet. The set_block_property's default_where will not override the where clause set during the design time. The implicit query which you are giving will always work.
Hope this helps.