how to access the bits in MCU 8051 IDE. P0.0=0x55;

I am trying to write bit access prg in 8051 MCU IDE
I am getting the syntax error with the following options
P0.0=0x55;
P0^0=0x55;

above options I am getting syntax error with ".0" "^"

Can you please guys help me out what is option to get the righ toption in MCU 8051 IDE.


Thanks to all

You can write byte wise

Or you can write bitwise



But you cant write 0x55 to a single bit...