MSP432 Initiating a Bootoveride (and BOM- Boot Override Mailbox)

I'm looking at sample code and appNote in SLAA660 and SLAA659.  I do not see how to get the 0xACE back from example code:

This function is called from main().  Under IAR emulation, I never see the ACK come back.  Evidently, the sample code doesn't work or is missing something; or...I'm missing something.  How would I, under IAR Embedded Workbench see the ACK come back?  This is the example code/problem/project in MSPware called bsl_config.

uint32_t CheckAndEraseFlashMailbox(uint32_t flashMailboxCommand)
{
    uint32_t result = BOOT_OVERRIDE_AND_MAILBOX_ERASE_OPERATIONS_SUCCESS;
    uint32_t eraseCycles = 0, eraseSuccess;

    /* Only check for commands different from COMMAND_NONE */
    if(flashMailboxCommand != COMMAND_NONE)
    {
        if(flashMailboxCommand & COMMAND_FACTORY_RESET)
        {
            if(*((uint32_t*)(ACK_FACTORY_RESET)) != 0xACE)
            {
                result = BOOT_OVERRIDE_OPERATION_FAIL;
            }
        }
        if(flashMailboxCommand & COMMAND_BSL_CONFIG)
        {
            if(*((uint32_t*)(ACK_BSL_CONFIG)) != 0xACE)
            {
                result = BOOT_OVERRIDE_OPERATION_FAIL;
            }
        }
        if(flashMailboxCommand & COMMAND_JTAG_SWD_LOCK_SECEN)
        {
            if(*((uint32_t*)(ACK_JTAG_SWD_LOCK_SECEN)) != 0xACE)
            {
                result = BOOT_OVERRIDE_OPERATION_FAIL;
            }
        }
        if(flashMailboxCommand & COMMAND_SEC_ZONE0_EN)
        {
            if(*((uint32_t*)(ACK_SEC_ZONE0_EN)) != 0xACE)
            {
                result = BOOT_OVERRIDE_OPERATION_FAIL;
            }
        }
        if(flashMailboxCommand & COMMAND_SEC_ZONE1_EN)
        {
            if(*((uint32_t*)(ACK_SEC_ZONE1_EN)) != 0xACE)
            {
                result = BOOT_OVERRIDE_OPERATION_FAIL;
            }
        }
        if(flashMailboxCommand & COMMAND_SEC_ZONE2_EN)
        {
            if(*((uint32_t*)(ACK_SEC_ZONE2_EN)) != 0xACE)
            {
                result = BOOT_OVERRIDE_OPERATION_FAIL;
            }
        }
        if(flashMailboxCommand & COMMAND_SEC_ZONE3_EN)
        {
            if(*((uint32_t*)(ACK_SEC_ZONE3_EN)) != 0xACE)
            {
                result = BOOT_OVERRIDE_OPERATION_FAIL;
            }
        }
        if(flashMailboxCommand & COMMAND_SEC_ZONE0_UPDATE)
        {
            if(*((uint32_t*)(ACK_SEC_ZONE0_UPDATE)) != 0xACE)
            {
                result = BOOT_OVERRIDE_OPERATION_FAIL;
            }
        }
        if(flashMailboxCommand & COMMAND_SEC_ZONE1_UPDATE)
        {
            if(*((uint32_t*)(ACK_SEC_ZONE1_UPDATE)) != 0xACE)
            {
                result = BOOT_OVERRIDE_OPERATION_FAIL;
            }
        }
        if(flashMailboxCommand & COMMAND_SEC_ZONE2_UPDATE)
        {
            if(*((uint32_t*)(ACK_SEC_ZONE2_UPDATE)) != 0xACE)
            {
                result = BOOT_OVERRIDE_OPERATION_FAIL;
            }
        }
        if(flashMailboxCommand & COMMAND_SEC_ZONE3_UPDATE)
        {
            if(*((uint32_t*)(ACK_SEC_ZONE3_UPDATE)) != 0xACE)
            {
                result = BOOT_OVERRIDE_OPERATION_FAIL;
            }
        }
        if(flashMailboxCommand & COMMAND_JTAG_SWD_LOCK_ENC_UPDATE)
        {
            if(*((uint32_t*)(ACK_JTAG_SWD_LOCK_ENC_UPDATE)) != 0xACE)
            {
                result = BOOT_OVERRIDE_OPERATION_FAIL;
            }
        }
    }
    if(result == BOOT_OVERRIDE_OPERATION_FAIL)
    {
        return(result);
    }

    /* All commands executed successfully, now erase flash mailbox */
    eraseSuccess = 0;
    MAP_FlashCtl_unprotectSector(FLASH_INFO_MEMORY_SPACE_BANK0, FLASH_SECTOR0);

    while((eraseCycles++ < MAX_FLASH_ERASE_CYCLES) && (!eraseSuccess))
    {
        eraseSuccess = MAP_FlashCtl_eraseSector(FLASH_MAILBOX_START);
    }
    if(!eraseSuccess)
    {
        result = MAILBOX_ERASE_FAIL;
    }

    MAP_FlashCtl_protectSector(FLASH_INFO_MEMORY_SPACE_BANK0, FLASH_SECTOR0);

    return(result);
}

Thanks,

-Jim