get data with joins

 Hey, i need help, trying to get durabilityDate from the InventDim, i've allready draged the table in de data source. Why i did not get my data?? and does i need the joinings? at this possition we are in the salesTable with salesId.

SalesTable               sales;
   str                      salesId;

   InventTrans              inventTrans;
   CustPackingSlipTrans     custPckSlpTr;
   CustPackingSlipJour      custPckSlpJr;
   PseudoPallet          Pseudo;

   str result;
   ;

  if (sales.CustAccount == "5555")
   

   {

              select Sales
                join CustPckSlpJr    where CustPckSlpJr.SalesId       == Sales.SalesId
         exists join CustPckSlpTr    where CustPckSlpTr.PackingSlipId == CustPckSlpJr.PackingSlipId
        exists join inventTrans     where inventTrans.inventDimId    == CustPckSlpTr.InventDimId
        exists join dim             where dim.inventDimId            == inventTrans.inventDimId
         exists join Pseudo          where Pseudo.WMSPalletId         == dim.wMSPalletId;

      where Pseudo.DurabilityDate = date2str(result)

     
     result = date2str(InventDim.DurabilityDate, 123, 2, 2, 2, 2, 4);