userform update table based on 3 criteria

I use the following code to look up a value based on 3 fields (job number, month, year)

Private Sub searchbilling_Click()

Dim ws As Worksheet
Dim JoBRow As Range
Dim UpdateRow As Long

Set ws = Sheets("PROJECTS")
Set JoBRow = ws.Range("C:C").Find(What:=JobSearch, LookIn:=xlValues, lookat:=xlWhole)


        If JoBRow Is Nothing Then
        MsgBox "CANNOT FIND JOB NUMBER"
        Exit Sub
    Else
        UpdateRow = JoBRow.Row
    End If
    
jobname = ws.Cells(UpdateRow, 4)
billingnotes = ws.Cells(UpdateRow, 32)


sn = Sheets("BILLING LOG").Cells(1).CurrentRegion.Offset(1).Value
    
    With ListBox1
        .List = sn
        For i = .ListCount - 1 To 0 Step -1
            If .List(i, 6) <> year.Text Then .RemoveItem i
        Next
        For i = .ListCount - 1 To 0 Step -1
            If .List(i, 8) <> cmbMonth Then .RemoveItem i
        Next
        For i = .ListCount - 1 To 0 Step -1
           If .List(i, 0) <> JobSearch Then .RemoveItem i
        Next
        If .ListCount > 0 Then
            billingamount = Format(.List(0, 2), "$#,##0.00")
        Else
            MsgBox "CANNOT FIND ANY RECORD FOR CURRENT CRITERIA"
        End If
    End With
End Sub

this will pull up the $value that matches that criteria. I would like to then be able to modify that value and UPDATE the value in the table . So basically it has to perform the same function but then enter the value within the "billingamount" text box.

any help is appreciated. thanks!