setting marker for given period time fails

edit

I am trying to visualize a specific marker for few period of time, but when i try this code it shows error:

 error: no match for ‘operator=’ (operand types are ‘visualization_msgs::Marker_<std::allocator<void> >::_lifetime_type {aka ros::Duration}’ and ‘int’)
     points.scale.y = 0.01; points.lifetime=1;

My codes are:

 visualization_msgs::Marker points, line_strip, line_list;
     points.header.frame_id = line_strip.header.frame_id = line_list.header.frame_id = "/camera_depth_frame";    points.header.stamp = line_strip.header.stamp = line_list.header.stamp = ros::Time::now();
        points.ns = line_strip.ns = line_list.ns = "lines";
    points.action =line_strip.action = line_list.action = visualization_msgs::Marker::ADD;
    points.pose.orientation.w = line_strip.pose.orientation.w = line_list.pose.orientation.w = 1.0;
    points.id = 0;
    line_strip.id = 1;
    line_list.id = 2;
    points.type = visualization_msgs::Marker::POINTS;
    line_strip.type = visualization_msgs::Marker::LINE_STRIP;

line_list.type = visualization_msgs::Marker::LINE_LIST;
points.scale.x = 0.01; 
points.scale.y = 0.01; points.lifetime=1;

How can i use this lifetime parameter? For eg. here i was trying to set lifetime of points as 1 sec.