sbhs gr_sbhs SBHS import gnuradio.sbhs.gr_sbhs as gr_sbhs gr_sbhs.gr_sbhs() self.$(id).set_parameters($window) IO Type type enum F32_F32f32_f32 S32_S32s32_s32 S16_S16s16_s16 S8_S8s8_s8 Num Inputs num_inputs 2 int Vec Length vlen 1 int Window window 1 int $num_inputs > 0 $vlen > 0 in $(str($type).split('_')[0]) $vlen $num_inputs out $(str($type).split('_')[1]) $vlen SBHS Serial block > Check if your scilab function requires multiple inputs > Make sure you have same n_input_items when you have multiple inputs