[sr-dev] t_relay with param is unknown

this line if (!t_relay("0x01")) { gives error 0(6768) DEBUG: <core> [sr_module.c:515]: find_export_record: <t_relay> not found 0(6768) DEBUG: <core> [sr_module.c:515]: find_export_record: <t_relay> not found 0(6768) : <core> [cfg.y:2921]: parse error in config file, line 2884, column 21: unknown command, missing loadmodule? how can i achieve the same effect in sr, i.e., do not generate provisional response. also, how can the other flag values mapped? in case of failure, does t_relay always return -1 or are the other negative values as well? -- juha