- number ret = bindings.AnnouncementSignatures_new(channel_id_arg, short_channel_id_arg, node_signature_arg, bitcoin_signature_arg);
+ number ret = bindings.AnnouncementSignatures_new(InternalUtils.check_arr_len(channel_id_arg, 32), short_channel_id_arg, InternalUtils.check_arr_len(node_signature_arg, 64), InternalUtils.check_arr_len(bitcoin_signature_arg, 64));