Assign
From ArcoWiki
To Assign a value to a variable, in [DMIS] is not enough to use the character “=”, it is necessary to use the ASSIGN/
command followed by the variable value.
The variable must be defined first.
$$ Assign text value to a string
TCDIRS=ASSIGN/'C:\Program Files\MyFolder\Data\'
$$ Assign numerical value to an integer
TCNSLT=ASSIGN/6