If I understand your question, you have a Cell, C4 for example, and you want to get this value. I suggest you to create a schema with the cell name please verify that the schema of your cell has the right format. A quite non elegant solution is to put into the tFileInputExcel value Header to 3 (for C4) and First column to 3 (for C)
i have followed u but it did not work. i have only the out3 which contain K22 between tMap and tMysqlOutput. i obtain this msg Warning: Usage of a local non-builtin name Unknown column 'K22' in 'field list'