Identify error using google maps marker

[#1]

Hi!

I'm new in QV. What I'm trying to do is painting with different colors depending on the value (CFR Value).

The problem is that I'm painting a lot of "Brown" points, but they are not real values and I don't know how to avoid it.

Any one can help me?

Here you have the code and the image:

=if([CFR]<11,'C:\VDFData\PP&B\Calidad & satisfaccion\calidad\run\TOP Reports\cyan.png',(if([CFR]<21,'C:\VDFData\PP&B\Calidad & satisfaccion\calidad\run\TOP Reports\dorado.png',(if([CFR]<41,'C:\VDFData\PP&B\Calidad & satisfaccion\calidad\run\TOP Reports\naranja.png',(if([CFR]<71,'C:\VDFData\PP&B\Calidad & satisfaccion\calidad\run\TOP Reports\rojo.png','C:\VDFData\PP&B\Calidad & satisfaccion\calidad\run\TOP Reports\marron.png')))))))

Thanks!