LP-MSPM0C1104：SysTicks works exceptionally

Hello everyone,

I am new with this EVB and MCU. I want to create a systicks running a 100us and trigger systick interrupt handler.
Here is the problem.

I can enable systicks and enable SysTick Interrupt.

However, within the SYSTICK interrupt vector service program, I have been unable to observe the SYSTICK interrupt occurring.
I also not found this example in the SDK, how should I activate it ?

Here is code：

uint16_t systick_count;

SYSCONFIG_WEAK void SYSCFG_DL_init(void)
{
SYSCFG_DL_initPower();
SYSCFG_DL_GPIO_init();
SYSCFG_DL_SYSCTL_init();
DL_SYSTICK_config(2400); //1/24MHz = 41.66ns, 41.66ns x 2400 = 100us
}

void SysTick_Handler(void)
{
systick_count++;
}

Can someone help answer this?

Thanks!