Electronic – STM32F0 internal EEPROM read and write limit for a variable

I use st eeprom emulation library to save my variables. I want to increase the variable when I push the button and save it to eeprom. It works good until 256 but after 256, microcontroller stop working. It seems it works 256 times and I can write 256 times in a page, but I want to read and write more than that. Where is the problem?
This is .h library

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __EEPROM_H
#define __EEPROM_H

/* Includes ----------------------------------------------------------------- 
-*/ #include "stm32f0xx.h"

  /* Exported constants ----------------------------------------------------- 
 ---*/

 /* Base address of the Flash sectors */
 #define ADDR_FLASH_PAGE_0     ((uint32_t)0x08000800) /* Base @ of Page 0, 1 
 Kbytes *///0x08000000
 #define ADDR_FLASH_PAGE_1     ((uint32_t)0x08001000) /* Base @ of Page 1, 1 
 Kbytes *///0x08000400
 #define ADDR_FLASH_PAGE_2     ((uint32_t)0x08001800) /* Base @ of Page 2, 1 
 Kbytes *///0x08000800
 #define ADDR_FLASH_PAGE_3     ((uint32_t)0x08002000) /* Base @ of Page 3, 1 
 Kbytes *///0x08000C00
 #define ADDR_FLASH_PAGE_4     ((uint32_t)0x08002800) /* Base @ of Page 4, 1 
 Kbytes *///0x08001000
 #define ADDR_FLASH_PAGE_5     ((uint32_t)0x08003000) /* Base @ of Page 5, 1 
 Kbytes *///0x08001400
 #define ADDR_FLASH_PAGE_6     ((uint32_t)0x08003800) /* Base @ of Page 6, 1 
 Kbytes *///0x08001800
 #define ADDR_FLASH_PAGE_7     ((uint32_t)0x08004000) /* Base @ of Page 7, 1 
 Kbytes *///0x08001C00
 #define ADDR_FLASH_PAGE_8     ((uint32_t)0x08004800) /* Base @ of Page 8, 1 
 Kbytes *///0x08002000
 #define ADDR_FLASH_PAGE_9     ((uint32_t)0x08005000) /* Base @ of Page 9, 1 
 Kbytes *///0x08002400
 #define ADDR_FLASH_PAGE_10    ((uint32_t)0x08005800) /* Base @ of Page 10, 1 
 Kbytes *///0x08002800
 #define ADDR_FLASH_PAGE_11    ((uint32_t)0x08006000) /* Base @ of Page 11, 1 
 Kbytes *///0x08002C00
 #define ADDR_FLASH_PAGE_12    ((uint32_t)0x08006800) /* Base @ of Page 12, 1 
 Kbytes *///0x08003000
 #define ADDR_FLASH_PAGE_13    ((uint32_t)0x08007000) /* Base @ of Page 13, 1 
 Kbytes *///0x08003400
 #define ADDR_FLASH_PAGE_14    ((uint32_t)0x08007800) /* Base @ of Page 14, 1 
 Kbytes *///0x08003800
 #define ADDR_FLASH_PAGE_15    ((uint32_t)0x08008000) /* Base @ of Page 15, 1 
 Kbytes *///0x08003C00
 #define ADDR_FLASH_PAGE_16    ((uint32_t)0x08008800) /* Base @ of Page 16, 1 
 Kbytes *///0x08004000
 #define ADDR_FLASH_PAGE_17    ((uint32_t)0x08009000) /* Base @ of Page 17, 1 
 Kbytes *///0x08004400
 #define ADDR_FLASH_PAGE_18    ((uint32_t)0x08009800) /* Base @ of Page 18, 1 
 Kbytes *///0x08004800
 #define ADDR_FLASH_PAGE_19    ((uint32_t)0x0800A000) /* Base @ of Page 19, 1 
 Kbytes *///0x08004C00
 #define ADDR_FLASH_PAGE_20    ((uint32_t)0x0800A800) /* Base @ of Page 20, 1 
 Kbytes *///0x08005000
 #define ADDR_FLASH_PAGE_21    ((uint32_t)0x0800B000) /* Base @ of Page 21, 1 
 Kbytes *///0x08005400
 #define ADDR_FLASH_PAGE_22    ((uint32_t)0x0800B800) /* Base @ of Page 22, 1 

 /* Define the size of the sectors to be used */
 //#define PAGE_SIZE               (uint32_t)FLASH_PAGE_SIZE  /* Page size */
 #define PAGE_SIZE             ((uint32_t)0x0800)
 /* EEPROM start address in Flash */
 /* Change this if you need more EEPROM space and require less programming 
 space */
 #define EEPROM_START_ADDRESS  ((uint32_t)ADDR_FLASH_PAGE_30) /* EEPROM 
 emulation start address */

 /* Pages 0 and 1 base and end addresses */
  #define PAGE0_BASE_ADDRESS    ((uint32_t)(EEPROM_START_ADDRESS + 0x0000))
  #define PAGE0_END_ADDRESS     ((uint32_t)(EEPROM_START_ADDRESS + (PAGE_SIZE 
  - 1)))

  #define PAGE1_BASE_ADDRESS    ((uint32_t)(EEPROM_START_ADDRESS + 0x400))
  #define PAGE1_END_ADDRESS     ((uint32_t)(EEPROM_START_ADDRESS + PAGE_SIZE 
  - 1))

   /* Used Flash pages for EEPROM emulation */
   #define PAGE1                 ((uint16_t)1) /* Page nb between 
   PAGE0_BASE_ADDRESS & PAGE1_BASE_ADDRESS*/

     /* No valid page define */
   #define NO_VALID_PAGE         ((uint16_t)0x00AB)

    /* Page status definitions */
    #define ERASED                ((uint16_t)0xFFFF)     /* Page is empty */
    #define RECEIVE_DATA          ((uint16_t)0xEEEE)     /* Page is marked to 
    receive data */
    #define VALID_PAGE            ((uint16_t)0x0000)     /* Page containing 
    valid data */

    /* Valid pages in read and write defines */
    #define READ_FROM_VALID_PAGE  ((uint8_t)0x00)
    #define WRITE_IN_VALID_PAGE   ((uint8_t)0x01)

     /* Page full define */
     #define PAGE_FULL             ((uint8_t)0x80)

    /* Variables' number */
     #define NB_OF_VAR             ((uint8_t)0x04)

     /* Exported types ------------------------------------------------------------*/
     /* Exported macro ------------------------------------------------------------*/
     /* Exported functions ------------------------------------------------------- */
      uint16_t EE_Init(void);
      uint16_t EE_ReadVariable(uint16_t VirtAddress, uint16_t* Data);
      uint16_t EE_WriteVariable(uint16_t VirtAddress, uint16_t Data);


      #endif /* __EEPROM_H */

I write two functions for read and write memory.

FLASH_Unlock();

EE_Init();

EE_ReadVariable( ++i , &alarm_counter );

FLASH_Lock();   

and

FLASH_Unlock(); 

EE_Init();


EE_WriteVariable( ++i , alarm_counter ); 

FLASH_Lock();   

I changed my code like this:

uint16_t VirtAddVarTab[10] = {0,1,2,3,4,5,6,7,8,9};

 uint16_t VirtdataTab[10] = {0,0,0,0,0,0,0,0,0,0};

 uint16_t alarm_counter = 0; 
 
 ......

 FLASH_Unlock();

 EE_Init();

 EE_ReadVariable(VirtAddVarTab[0], &VirtdataTab[0]);

 alarm_counter = VirtdataTab[0] + 1;

 EE_WriteVariable( VirtAddVarTab[0] , alarm_counter ); 

 FLASH_Lock();  

Do I have to use address like 0x0100 or it is correct to use like this in my code?

Does 0x0100 is this address in .h file?
#define ADDR_FLASH_PAGE_0 ((uint32_t)0x08000800)