RH850 application code load from boot loader


I have written boot loader code using FACI interface placed in User boot area (0800 0000H to 0800 FFFFH Code flash 64 KB) , and able to erase/download/program successfully. 

I am facing issue with Reset Vector. I want to jump into boot loader after each reset then boot loader will suppose to take decision whether to jump in application or not. How do i change my reset vector address to 08000000H ?


I have figured out changing reset address ( shown in below image ), will that work, how ? Is it one time process only ? Is it necessary to execute that configuration command from code, how ?