Form Level doubt

Hi,

I have one doubt i have created one form .Ax 2009

i modified the sales order form i am create in a check box in line item .i click the box in particular record and save it .

the only selected record should appear in the form i created.

how to write the code in form or table.

pls help me

Thanks,

samy

How does the form created by you and the sales order form are linked? Please elaborate…