This trigger takes a mandatory variable number as an argument. It returns the value of the player's specified system float variable.

This trigger should NOT be used under normal circumstances. System variables are reserved for bookkeeping in common1.cns.

Format: SysFVar(exprn)

Arguments:

- exprn (int): An expression evaluating to a variable number. Valid numbers at this time are 0-4.

Return type: float

Error conditions: Returns 'Bottom' if exprn evaluates to 'Bottom', or if exprn evaluates to an invalid variable index.

Example:

`trigger1 = SysFVar(0) = -1.23
; Triggers if the value of system float variable 0 is -1.23.`