(googleAnalytics.getTracker() as any).setValueForKey(value, (global as any).GAIFields.customDimensionForIndex(key));

*** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<GAITrackerImpl 0x2811e94a0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key &cd1.'