You can use any variable that you have defined in the database (with the Variable Tags form) in your functions. To use a database variable, specify the tag name:
<Tag>
where Tag is the
name of the database variable. For example, to change the value of
the database variable "LT131" at run time, you would use the
following statement in your function:
LT131=1200; !Changes the value of LT131 to 1200