Here is the code I am passing to Crystal Reports

CrystalReport1.SelectionFormula = "{POL_CONTR.ENT_TISTMP}>= _
'Date(" + ccyy + "," + mm + "," + dd + ")'"

Immediate window:
?crystalreport1.SelectionFormula
{POL_CONTR.ENT_TISTMP}>= 'Date(1999,01,01)'

And Crystal returns the following error message:
Error in formula <Record Selection>.
'
'
The remaining text does not appear to be part of the formula.

What am I doing wrong?  I am sending this selection formula to
currently functioning crystal report.  I have other option buttons
that call the same report sending a different non-date selection
formula that works just fine.  Any ideas?

No quotations required before and after Date Function.

CrystalReport1.SelectionFormula = "{POL_CONTR.ENT_TISTMP}>= _
 Date(" + ccyy + "," + mm + "," + dd + ")"

Best Regards,

Luqman