Forms :: Retrieving More Than One Row In Form

i have created two data blocks

First data data block contains a list item and a text item based on the selection of the list item and the value in the text item i need to retrieve more than one row in another data block whose NUMBER OF RECORDS DISPLAYED property are set to 10.

I have a Button in the first data block. So in the WHEN BUTTON PRESSED trigger i wrote SELECT INTO clause which is raising "exact fetch returns more than requested number of rows".Then i used a cursor in the WHEN-BUTTON-PRESSED trigger in the first block to fetch row by row and assign it to the items in second block. But i am able to retrieve only one record in the second block.