Write Flash of CY8C4246LTI-M445

Dear All,

Im trying to write and read Flash. But it looks only reading works.

I have

/* Flash constants */
#define FLASH_ROW_SIZE_BYTES    CY_FLASH_SIZEOF_ROW
#define FLASH_ALIGNED __attribute__ ((aligned (FLASH_ROW_SIZE_BYTES)))

static const uint8 FLASH_ALIGNED flashRowDataFLASH[FLASH_ROW_SIZE_BYTES]= {2}

/* Flash data write constants */
#define FLASH_DATA_BASE_ADDRESS_BYTE    (uint32) (&flashRowDataFLASH)
#define FLASH_DATA_BASE_ADDRESS_ROW     FLASH_DATA_BASE_ADDRESS_BYTE / FLASH_ROW_SIZE_BYTES

Read as:

a = flashRowDataFLASH[0];   and get the value 2

For write:

uint8 eepromArray[CY_FLASH_SIZEOF_ROW];

eepromArray[0] = 5;

uint8 flashWriteResult;
    
flashWriteResult = CySysFlashWriteRow(FLASH_DATA_BASE_ADDRESS_ROW, eepromArray);

But after a power off-on and read the value 2 is read again not 5 as expected.

Could someone tell me please what Im doing wrong ?

Thanks

Zoltan