To get value in detail part of master detail form

Question

hi all
i am using forms 6i
there is a master detail form
in the master part
i am just mentioning one field as per the requiremnt
FIELD BELONGS TO DATA BLOCK XXNP_JL_001.FIELD
this FIELD field is populated by a flexfield NAP_GL_WELL
VALUES are
abc                           123
def                            456
fgh                            875
in the master part of the form there is also a button called POPULATE which populates values  for the fields in the detail form
in the detail part of the form
i am mentioning two fields
item_number belongs to data block XXNP_JL_EST_002 and      opn_value belongs to data block XXNP_JL_RES_005
now the requiremnt is as follows
say the WELL field has a value 'abc'
then in the detail part
whenever and only when the item_number is '1010103002' the opn_value field should have value 123
similarly when the WELL field has a value 'def'
in the detail part
when the item_number is '1010103002' the opn_value  field should display value '456'kindly guide on how this can be achieved
thanking in advance
i did a when validate trigger on opn_value field
BEGIN
IF  :XXNP_JL_RES_005.OPN_UOM_CODE='PKU' and :XXNP_JL_EST_002.ITEM_NUMBER='1010103002' THEN
        SELECT hierarchy_level
        INTO :XXNP_JL_RES_005.OPN_VALUE
        FROM fnd_flex_values
        WHERE flex_value_set_id = 1009757
        AND FLEX_VALUE=:XXNP_JL_001.FIELD ;
        END IF;
        END;Edited by: makdutakdu on Jul 4, 2012 12:40 PM
Edited by: makdutakdu on Jul 4, 2012 1:05 PM
Edited by: makdutakdu on Jul 4, 2012 1:09 PM

Answer 1

HI
If i understood your question on overview, your requirement is
get master details in details column.
If this is correct,
YOu can write a simple plsql to get master value in details columne thru trigger
If my understanding is not correct, please tell me