To Calculate TDS while Invoicing Purchase Order

One of our customer needed How much TDS is Deducted to be shown on Invoicing screen as once TDS posted cant be reversed .

Hence the solution is -


Public void calcWithholdTaxes(ParmId  ParmId)
{
    PurchTotals                     purchTotals_1;
    Purchtable                      _purchtable;
    purchline                       _purchline;
    amountcur                       withholdtax;
    int                                      i;
    purchparmtable               parmtable;
    ;




    select PurchId from parmtable where parmtable.ParmId == ParmId;
    select * from  _purchTable where _purchTable.PurchId == parmtable.PurchId;


       while select * from  _purchline where _purchline.PurchId == parmtable.PurchId


       {
        purchTotals_1 = PurchTotals::newPurchTable(_purchTable);
        purchTotals_1.calcWithholdTax_IN(_purchTable,_purchLine);
        withholdtax+=purchTotals_1.parmTaxWithholdAmount_IN();
       }




      tdsamt.text(strfmt('%1',withholdtax));


}


Call this method in PurchEditLines Form init() method.