pwm 18f2431

[mackrackit]

From Micros web site

Static RAM or SRAM
Static Random Access Memory. Program memory you can Read/Write on the target board that does not need refreshing frequently.

Calling it SRAM is a little misleading.

In your case I think you have the idea. You are talking about program variables. Variables to be used inside the program. Not permanent storage.

You have for the 18Fs four variable sizes to pick from
bit, byte, word, long

near the begining of your code you will have something like

F69H  VAR  BYTE

Then you can use F69H as in your example.
The value will be erased at power down.