TMS570LS0432: How to Run Fapi_Functions From RAM for Read and Write operation on Bank 0

Hi 

I am trying to write into the Flash memory using Fapi_functions ,

i have intialized  to Fapi_initializeFlashBanks(80)  it  returns success ,after that when i try to set  Fapi_setActiveFlashBank(Fapi_FlashBank0) to Bank 0 ,either it is going to undef entry or it is getting in to hard fault error and i have seen some ti post saying it to run from RAM ,please help in this 

Thanks in advance