Think we need a little more info.
Are you trying to update data?
like this you have a table with fields a b c d and another table that has
h j k l m n o p q...
now when I put the filed on the layout that has a table with fields a b c d and make a dropdown list
so the data thatwil go into the first table into the filed a ... which is
selected with value list.... and i want all other wanted fileds for
example j and k from the second table to be enterd in b c of the first
table based on the value of the first filed
I manged using relationships and setting variable