Report Based On Temp Table Not Working

table 60030 SalesInvoiceCreditTemp
{
    Caption = 'Sales Invoice & credit Temp';

   [b] TableType = Temporary[/b];//Not working


    fields
    {
        field(60010; Key1; Integer)
        {
            Caption = 'Key';
            AutoIncrement = true;

        }
        field(60020; DocumentType; Code[20])
        {
            Caption = 'Document Type';
        }
        field(60030; DocumentNo; code[50])
        {
            Caption = 'Doc No.';
        }
        field(60040; PostingDate; Date)
        {
            Caption = 'Posting Date';
        }
        field(60050; ExternalNo; Text[200])
        {
            Caption = 'Extenral No';
        }
        field(60060; CustomerCode; code[50])
        {
            Caption = 'Customer Code';
            TableRelation = Customer;
        }
        field(60061; CustomerName; Text[200])
        {
            Caption = 'Customer Name';
            TableRelation = Customer.Name;
        }


    }
    keys
    {
        key(PK; DocumentType, DocumentNo)
        {
            Clustered = true;
        }

        key(Key2; CustomerName, PostingDate)
        {

        }
    }

}

report 60030 CustomerItemSales 
{
    DefaultLayout = RDLC;
    RDLCLayout = 'CustomerItemSales.rdlc';
    ApplicationArea = Basic, Suite;
    Caption = 'Customer Item Sales';
    PreviewMode = PrintLayout;
    UsageCategory = ReportsAndAnalysis;
    DataAccessIntent = ReadOnly;
    Permissions = TableData SalesInvoiceCreditTemp = rimd;

    dataset
    {

        dataitem(SalesTemp; SalesInvoiceCreditTemp)//*Temp*
        {
            DataItemTableView = sorting(CustomerName, PostingDate);


            RequestFilterHeading = 'Sales';
            column(ReportName; 'Customer Sales by Item') { }
            column(SalesBufferFIlter; SalesBufferFIlter) { }
            column(StartingDate; FromDate) { }
            column(EndingDate; ToDate) { }
            column(DocumentType; DocumentType) { }
            column(CustomerCode; CustomerCode) { }
            column(CustomerName; CustomerName) { }



            trigger OnPreDataItem()
            var
                SalesTempTbl: Record SalesInvoiceCreditTemp;
                SalesInvHdr: Record "Sales Invoice Header";

            begin
                SalesTempTbl.DeleteAll();
                SalesTempTbl.Init();
                begin//*INVOICE
                    SalesInvHdr.Reset();
                    SalesInvHdr.SetRange("Posting Date", FromDate, ToDate);
                    if SalesInvHdr.FindSet() then
                        repeat

                            SalesTempTbl.DocumentType := '1INV';
                            SalesTempTbl.DocumentNo := SalesInvHdr."No.";
                            SalesTempTbl.PostingDate := SalesInvHdr."Posting Date";
                            SalesTempTbl.CustomerCode := SalesInvHdr."Sell-to Customer No.";
                            SalesTempTbl.CustomerName := SalesInvHdr."Sell-to Customer Name";

                            SalesTempTbl.Insert();

                        until SalesInvHdr.Next() = 0;
                end;

            end;

        }
    }
    requestpage
    {
        SaveValues = true;

        layout
        {
            area(content)
            {
                group(Options)
                {
                    Caption = 'Date Range';
                    field(StartingDate; StartingDate)
                    {
                        ApplicationArea = All;
                        Caption = 'Starting Date';
                        ToolTip = 'Specifies the date when you want the report to start.';
                    }
                    field(EndingDate; EndingDate)
                    {
                        ApplicationArea = All;
                        Caption = 'Ending Date';
                        ToolTip = 'Specifies the date when you want the report to end.';
                    }
                }
            }
        }
    }

    trigger OnPreReport()
    var
        FormatDocument: Codeunit "Format Document";
    begin
        CompanyInformation.Get;

        SalesBufferFIlter := SalesTemp.GetFilters;
        FromDate := StartingDate;
        ToDate := EndingDate;

        IF (StartingDate = 0D) OR (EndingDate = 0D) THEN
            ERROR('Start Date and End Date are Mandatory');

    end;

    var
        StartingDate: Date;//check
        FromDate: date;
        EndingDate: date;
        ToDate: date;
        CompanyInformation: Record "Company Information";
        Text000: Label 'Period: %1';
        Item: Record Item;

        SalesBufferFIlter: TExt;



}