Conditional Color for Stacked Bar Expression

[cdunham]

This is my first post and I am very new to QlikView so let me know if I need to add anything else.  I have a combo chart with some stacked bars.  I need one of the expressions to change color if it is greater or lower than 0.  The expression is 

Sum({$<Revenue.Source={'Forecast'},[Date]={">$(vMaxBookedDate)"}>}Revenue.Price)-Sum({$<Revenue.Source={'SABA', 'SABA Valencia','SpecialContracts'},[Date]={">$(vMaxBookedDate)"}>}Revenue.Price)

I have tried 

if((Sum({$<Revenue.Source={'Forecast'},[Date]={">$(vMaxBookedDate)"}>}Revenue.Price)-Sum({$<Revenue.Source={'SABA', 'SABA Valencia','SpecialContracts'},[Date]={">$(vMaxBookedDate)"}>}Revenue.Price))>0,RGB(180,23,30),RGB(0,0,0)) 

This did not work.  Any recommendations would be appreciated. 

[edwin]

that should work.  of course you added it in the background of the expression - rt?  otherwise, pls attach a QVW.

[cdunham]

I was trying to put it into the color itself on the colors tab.  Putting it into the expressions background color made it work.  Thank you!

[edwin]

youre welcome