Hi all, I have a very simply query which will call a function from my oracle database. It takes an argument of type, Number. So, I have added one parameter of type java.lang.Number. Below, is the Query I am using in IReport 3.7.1.SELECT pkg_num_to_word.func_number_to_word($P{num_val}) AS NUM_WORD FROM "DUAL" DUAL But, When I am trying to run the report, I am getting the error, " net.sf.jasperreports.engine.design.JRValidationException: Report design not valid : 1. Parameter type not supported in query : num_val class java.lang.Number " But, When I am just passing a hard coded value to the func_number_to_word() function, It is working well. Can anyone please, help me in this regard. Thanks, Arup.