How to show negative values in bar chart

[ashis]

Hi,

We have a bar chart and my requirement is i need to show all the values(positive and negative) in Y axis and on the same direction.

So i used these code in the expression to get the chart 

=fabs(sum ({$<dim={'abc'}>}xxx)) - converting negative values with absolute values. Please see the screen shot attached, and distinguishing negative values with red color and positive value with green color.

Now i need to show the '-' sign if the value is negative however the chart bar should be on the y axis same direction as it is .

so my requirement is to display the '-' if it is negative. Is there way to do it.

[ashis]

Thank you Vegar, for your time. You also gave me one qvw file earlier that was working fine.

I believe something weird happening  at my end. I am unable to send my application due to some restriction of data.

I will look into it why it is causing the issue. The solution seems simple though.

Thank you very much.