Hi Faqru,
From where is the buffer of table m_tSalesQuotationTable getting initliazed? Is it coming from the report query, if yes then is this field WorkerSalesTaker defined in the query datasource field node?
Try this:
m_tPSAQuotationsTmp.Name1 = HcmWorker::find(SalesQuotationTable::find(m_tSalesQuotationTable.QuotationId).WorkerSalesTaker).name();
Generate CIL and then run the report. As mentioned in previous responses check that there is data in the table.