How to change Code address in Flash using SWSTM32?

I want to use Flash memory to store values in runtime. But I don't know the how much my code size would be and fill the flash. So I thought instead change the Code memory address starting address and use memory above this starting address. But I don't know how to do this. I am using STM32F030R8Tx and IDE is SWSTM32(Eclipse). Please guide me. 

I am using STM32 EEPROM Emulation as shown in app note to store values in flash in runtime.