controller usage in statistics board

Hi, Can you tell me how you get controller usage to register in the statistics board, I am getting the fuel usage element to show up on the graphs but the controller usage is shown as a straight blue line.
I use the slot it SCP01a 1.11 anologue electronic controller which is connected to slot it telemetry box and track interface unit which in turn relay the signal back to the PC LAPCOUNTER SOFTWARE. every thing else is working as it should do - any help appreciated -

Did you set Pc Lap Counter to use the digital fuel management ? ( in the options screen, tab page fuel, "use digital fuel management" must be ticked)

Hi That has worked thank you, can you help on another copule of item please
1) I only have one SCP slot it controller so now I have switched on the digital fuel measurment will my other controller a Truspeed MT I Mosfet Transistor PWM Controller still be used for fuel management on the lane using this controller, this is a good controller and had it some time so do not realy want to replace with with another SCP.
2) I have the full version ofPC lap counter installed if I up grade to the newest version do i just down load this and install onto my copmputer, do all my previous setting etc remain unchanged

Thanks chris

1) no, digital fuel management is only for SCP Slot it controller.
2) look here https://pclapcounter.forumotion.com/t50-update-your-pc-lap-counter