Change bar colours for negative numbers

Hopefully you can help me or point me in the right direction. I am trying to show a chart where everything below the link is Green and above is Red I had it working before but it may be the way my data is stored ---  see link to chart  https://merit.domo.com/kpis/1638533623/drillpath/1/drillview/5845842   I have written the logic in Beast Mode under the field GetStatusD.

case

when sum((CASE  WHEN (`type`='Actuals') THEN `amount_usd` ELSE 0 END ))-Sum((CASE  WHEN (`type`='Budget') THEN `amount_usd` ELSE 0 END ))> 0 then 'Above Target'

else

'Below Target'

End

It is working in chart - https://merit.domo.com/page/1137975265/kpis/details/274689089