Build error

Imports MyCompany.Data
Imports System
Imports System.Collections.Generic
Imports System.Data
Imports System.Linq
Imports System.Text.RegularExpressions
Imports System.Web

Namespace Rules
    
    Partial Public Class DataBusinessRules
        Inherits MyCompany.Rules.SharedBusinessRules
        
        <ControllerAction("Data", "Calculate", "Total_Duration")>  _
        Public Sub CalculateData(ByVal data_ID As Nullable(Of Integer), ByVal [date] As Nullable(Of DateTime), ByVal task As String, ByVal timeIN As Nullable(Of System.TimeSpan), ByVal timeOUT As Nullable(Of System.TimeSpan), ByVal total_Duration As Nullable(Of System.TimeSpan))
            UpdateFieldValue("Total_Duration", (datediff(HOUR,[TimeIN],[TimeOUT])))
        End Sub
    End Class
End Namespace

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