Draw circles in Deepstream python app

I am trying to draw circles using the python apps. My number of circles is dependent on the number of persons on screen. But apparently display_meta.circle_params is only allowing to draw 16 circles. Whenever the count, display_meta.num_circles, reaches 17 I get a list index out of range when I define py_nvosd_circle_params in the following code:

display_meta.num_circles = 0
for circle in circle_list:
    display_meta.num_circles += 1
    py_nvosd_circle_params = display_meta.circle_params[display_meta.num_circles-1]
    py_nvosd_circle_params.xc = circle[0]
    py_nvosd_circle_params.yc = circle[1]
    py_nvosd_circle_params.radius = circle[2]
    py_nvosd_circle_params.has_bg_color = 0
    py_nvosd_circle_params.circle_color.red = 255.0
    py_nvosd_circle_params.circle_color.blue = 0
    py_nvosd_circle_params.circle_color.green = 0
    py_nvosd_circle_params.circle_color.alpha = 1

There is no update from you for a period, assuming this is not an issue any more.
Hence we are closing this topic. If need further support, please open a new one.

Hey, would you mind to share your setup with us?