To check external memory location

unsigned char xdata temp _at_ 0x8000;
temp= 0xab;

In the above program, using the DEBUG MODE, how do I see the external data memory contents.In the above example
" ab" at location 0x8000.
PLEASE HELP ME ON THIS

BY USING THE WATCH MEMORY IN DEBUG MODE
I AM ABLE TO ACCESS THE CODE MEMORY, BUT NOT EXTERNAL DATA MEMORY