I couldn't manage the wakeup and sleep mode of P-L496G-CELL02 with ST's x_cube_cellular drivers?

[IOT Embedded System]

I'm working on a prototype based on P-L496-CELL02, and I wanted to manage the sleep and wakeup mode on the BG96 modem integrated on the evaluation board with the x_cube_cellular drivers, I did not find examples and I did not manage to put it to sleep, could you help me , please with examples or documents