GSEventSetBacklightLevel from a plist value iPhone

Question

I'm trying to set the backlight display from a plist value, but I keep getting an error! So I guess my question is how can I convert a plist value to a float value so I can set the backlight form the plist entry?

The Code:

float customBacklight = (float)[[plistDict floatForKey:@"Backlight Level"] floatValue];
GSEventSetBacklightLevel(customBacklight);

The Error:

reason: '*** -[NSCFDictionary floatForKey:]: unrecognized selector sent to instance 0x15695c0'

Everything works fine, values are correct, Private API's are setup correctly, just cant seem to convert the plist value to a float value. This is not for an AppStore release either.

Answer 1

float customBacklight = [[plistDict valueForKey:@"Backlight Level"] floatValue];