Autohydro Variable calling question

I am trying to call a variable as a string in a run command i.e.


VARIABLES CON (STRING)

{CON} = "RI.SAV"

RUN "{CON}"

I know this probably has some syntax problems, but I tried multiple combinations of syntax and the result would always be that autohydro asked me to find the file called by the run command. Does anyone have any insight into the proper way to do this or if it can even be done?

Thanks