Crystal Report 10 Formula Error

hello,

im using crystal report 10 and vb6.0
if i add any selection formula i receive a 20515 error!


ex: if i used this line i will receive an error
CrystalReport1.SelectionFormula = "{CheckList.BranchID}=52"

if i removed it i will get an empty report , because my DB has three tables
and im reporting from these three tables

i wanna know , can i use selectionformula with crystal 10?
and why im getting an error always?

note: im using crystal report control 4.6 on the form.. (crystalreport1)

"if i removed it i will get an empty report "

This means that they are no records in this report , selection formula is used to select some record from the given records .

well check the alais name of the table for which u r passsing the selection formula.