Pixhawk 4 holybro compatible with px4flow sensor?

Hello guys.

im trying to use PX4FLOW sensor on holybro pixhawk4.
but during calibration, the flowX chart is just flat.

As you see the green flat lines. its the flowX

But im sure the PX4FLOW itself is good,
because before i use this holybro pixhawk4,
im using the old pixhawk 2.4.8
and the flowX and flowY chart is good. Normal.

Does holybro pixhawk4 doesnt compatible with PX4FLOW?
or i do something wrong?
Please help me.
Thank you