How should I change the "DSM_DEVICE_MAX" in serial example?

[Nicklaus]

SDK: nRF5_SDK_15.2.0_9412b96  and  nrf5_SDK_for_Mesh_v2.2.0_src

IDE: SEGGER Embedded Studio V3.34a

SoftDevices:  s132_nrf52_6.0.0_softdevice.hex

Computer platform : WIN 7

I use the example Interactive PyACI and do as the usage do. when I provision more than 10 server nodes (No power off the serial board),it can't work at all.

I check the serial source code and find the reason in  nrf_mesh_config_app.h  as below:

the DSM_DEVICE_MAX limit in 10

Now I wanna change it to 50

then another problem comes,when I provision nodes more than 32. the same  error occurs. 

 in my opinion it should provision node up to 50,but not.

So, what should I do for  "DSM_DEVICE_MAX" in serial example?

Best regard!

[Nicklaus]

I've been found out the way to change it ,which is to modify the  nrf_mesh_config_core.h in /mesh/core/api 

the entry has been limited nodes in 32.