Traffic light indicator in straight table

[grajmca_sgp123]

Hi Experts,

I am trying to design a Traffic Light Gauge chart and show Green , Yellow and Red lights based on the VPQ field. below is my data source.I know the properties where we can create Traffic Light signals. 

in Chart Properties --> Expressions -->  Dispay Options  --> Representation --> Traffic Light Gauge.

but I am unable to set the min and max values for negative and positive values.

	Q1'15	Q2'15	VPQ
Critical
702	149,012.00	297,171.00	99%	Red indicator
701	40,334.46	163,359.00	305%	RED indicator
711	758,563.64	746,340.86	-2%	Yellow indicator
712	256,640.84	288,912.64	13%	Yellow indicator
Component
501	2,190,832.00	133,596.00	-94%	green indicator
502	(2,727,808.04)	(24,504.00)	-99%	green
702	26,813,560.37	3,026,948.03	-89%	green
701	11,552,657.65	2,179,616.26	-81%	green
711	3,973,379.22	727,615.97	-82%	green
712	4,141,657.84	900,335.75	-78%	green

Can you please suggest how we can set min and max values to get respective traffic light indicators.

Thanks in advance

[Anonymous]

by using the gauge chart to implement the green and red symbols