I have tried using record module with expression builder, but i keep getting this

ERROR:

A linker error was detected at the following block:

* 79 99$ TALLY:

Record 2,DAVG(Truck.NumberBusy)/MAX(1,

DAVG(Truck.NumberScheduled)),1:

NEXT(6$);

Undefined symbol : Truck.NumberBusy

Possible cause: A variable or other symbol was used

without first being defined.

Possible cause: A statistic was animated, but statistics collection

was turned off.

To find the problem, search for the above symbol name using

Edit-Find from the menu.

11514:EELINK