How can I use multiple maxsonar sensor on pixhawk4 mini

Hello everyone, I want to connect two maxsonar sensors on my Pixhawk4 mini board.
I already changed the address of the sensors of )x70 and 0x6F and checked it on QGroundContol separately.
However, when I connect two sensors at the same time using the I2C splitter, the QGrouncControl senses it as a single sensor. (When I type 'listener distance_sensor -n 5, some messages are from 0x70 and some other messages are from 0x6F)
Do I have to do something on the firmware?
Thank you!