Multiple Variables - Pins

[MR2010]

I would like to make one variable an alias for more then one pin. So far I have not been able to make it work. Here is an example of what I have tried. There are more but this gives the idea. What am I doing wrong, or is it possible? Array?

s1 var porta.1 & porta.2

if you wnna drive pins EX: portb output and input this will helps u

S_1 VAR  PORTB

S_1 = %00000001
S_1 = %XXXXXXXX
'  so on ...     do what you want

hope this will helps you