I have manually sent the colour keeping 10 at parameter, but when i increase the parameter by 20 or 30 the color remain same how can i keep the same colour for all parameters?

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Have you looked into chart color?

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You can change the first two colors, and those will be reflected in this graph all the time if it is only 2 colors.

It contain only one color

The “Chart Color” does not. It has multiple.

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