How to hidden cursor in spinbox

Here is my sim code in Simulator. I want to hidden the cursor when it unfocused.

https://sim.lvgl.io/v8.1/micropython/ports/javascript/index.html?script_startup=https://raw.githubusercontent.com/lvgl/lvgl/d851fe0528fcb920fee86c944fe9dbbaf6fbb0c9/examples/header.py&script=https://raw.githubusercontent.com/lvgl/lvgl/d851fe0528fcb920fee86c944fe9dbbaf6fbb0c9/examples/widgets/spinbox/lv_example_spinbox_1.py&script_direct=36775720d32323e617de381d0b4267be9b0d673f

Have you solved the problem´╝č I want to hidden the cursor when it unfocused ,too.

Noway, Who was stupid to turn off that useful feature, im trying over a week and i cant disable it