How to implement search capabilities in Oracle Forms 6

[OraRepDvlpr]

I want to implement following search capabilities in Oracle Forms.
Here is the sequence of steps :
1) User inputs a search string in Text Item and hits
Enter/Return(same like Find % feature in Oracle LOV). The problem is we
can select only one value in LOV but in my case user needs to select
more than one values as explained in step 3 below.
2) System returns the matching values from table and displays them in
list box say ListBoxA.
3) User selects values (Mouse Double click , Ctrl, Shift )from
ListBoxA and these values are moved to ListBoxB.
4) The selected values are passed as parameters to the report and
results are generated for values in ListBox2.

LOV is an immediate solution but it is limited by the fact that we ca
select only one value at a time.

Any ideas?
TIA.