The field name is not known: Details: ErrorKind

Hello Everyone,

I'm trying to call my existing crystal report from VB.Net application. When I hit displayCR button on my form I get the below error message on one of the formula.

Is anything wrong with the below formula?

@DetailJobNumber

if{Invoice_Details_Prn.sJobNumber}<>{@fmlJob#}

and{Invoice_Details_Prn.sLineCode}in["1", "2", "6","7","Q","Q1"]

then{Invoice_Details_Prn.sDetail}

else{Invoice_Details_Prn.sDetail}

Thanks