Nested tables.... Please help

Question

Hi Friends,
I have some strange issues when I am trying to create a nested dynamic table with SAP DATA in Adobe Designer.
In the context, under the MAIN node
I had dragged the header table. Under the header table I had dragged the item table and had created a WHERE condition to link the HEADER and ITEM table.
Now my layout is pretty complicated..
I want to result to be as below:
header row.... with 0001 Customer name
item row with 0001 0010 price qty
0001 0020 price qty
0001 0030 price qty
header row... field4
(field4 from the header table has to be displayed after the item table has generated all the items and this process should repeat for all header data)
My design in layout is as below
subform1 for headerdata
( set as positioned and has set to 'Repeat form for each data item')
headerdata fields for subform1 (field1, field2, field3)
subform2 for itemdata
(set as folowed)
subform3 for itemdata
(set as positioned, 'Allow page breaks within content' and had set 'Repeat form for each data item')
itemdata fields in subform3
subform4 for headerrow field4
but when I activated and execute the form, the result was wrong.
The result should be like below...
|->field1, field2, field3
|--->field1 charge111
|--->field1 charge211
|-> field4
|->field2
|--->field2 charge122
|--->field2 charge222
|-> field4
but it is printed like below and field4 is overlapped with the item rows if the item rows are more...
DATA
|->field1 field2 field3
|--->field1 charge111 This inner table is overlapping the subform4 for each item
|--->field1 charge211
|
|->field1 field2 field3
|--->field1 charge121 This inner table is overlapping the subform4 for each item
|--->field1 charge221
2) If I have more item data, all the item rows are overlapped with the field4 (which I had explained in my layout) and the item rows are not moved to the next page, but still it is continued in the same page, meaning that if the page can fill 20 lines and my item row are more than 20 lines, 20 lines are printed and the remaining items are not moved to the next page... it is invisible...
How can I solve this issue?
Please help me
Thanks in advance.
Jaffer Ali.S

Answer 1

Hi Francois. Thank you very much for your reply, but it seems that i still get errors. So let me tell what i have done.
As you suggested me: i have done a block based on a sub-query for the nested-table:
'select courses from department where name= :department.name'.
In the master block(department) i have the when-new-record-instance trigger:
Declare
LC$Req varchar2(256);
Begin
LC$Req := '(select ns.courses from table
( select courses from department where name = ''' || :DEPARTMENT.name || ''' ) ns )';
Go_block('block11');
Clear_Block ;
Set_Block_Property( 'block11', QUERY_DATA_SOURCE_NAME, LC$Req ) ;
Execute_query ;
End ;
Now the errors i receive, this time in the runtime mode are:
- FRM-41380: Cannot set the blocks query data source
-FRM-41003: This function cannot be performed here.
Since it seems that you know how to work with the nested table i would really appreaciate your help. I am new in the nested table and if you could give an ex with my tables it would be great.
Thank you in advance.