passing value to the formula field :Help

[kumar_pln]

hi,

i am generating the report, in report i have two formula fields
values are passed from the form dynamically during the runtime

it works in VB, but in vb.net i dont have idea

crp.Formulas(0) = "dt1= " & a1 & " "
crp.Formulas(1) = "dt2= " & b1 & " "

its urgent

Thanx