using conditional palette in a line chart.

[naidu4u]

I have a case where we have to dynamically change the color of the line depending upon a condition and by using conditional palette in the chart options I have created a string variable so that based on the variable from the query my color of the line should vary but I am unable to get the correct colors which I specified using this string variable in the conditional variable. please help me with this.

Thanks in advance.