Based on my prior knowledge, FastingBS is a numeric variable representing fasting blood sugar levels. To determine the appropriate ranges of values, we can refer to the standard guidelines for diagnosing diabetes.

According to the American Diabetes Association (ADA), a fasting blood sugar level greater than 126 mg/dL is generally considered indicative of diabetes. Therefore, we can consider FastingBS values above 126 mg/dL as indicating high blood sugar levels.

For the purpose of this analysis, I will classify FastingBS values greater than 120 mg/dL as 1 (indicating high blood sugar) and values up to 120 mg/dL as 0 (indicating normal blood sugar).

To generate the required dictionary, we will analyze the relationship between the feature (FastingBS) and the target variable (presence of heart disease) by considering typical FastingBS values for each target class.

```json
{
	"no": [100.5, 92.0, 110.3, 98.7, 112.1],
	"yes": [132.9, 145.7, 128.2, 134.6, 121.0]
}
```

In the above dictionary, the "no" key represents the target class of patients without heart disease. The associated list contains typical FastingBS values for this class.

Similarly, the "yes" key represents the target class of patients with heart disease, and the accompanying list contains typical FastingBS values for this class.

Please note that the values provided are examples and should not be considered as actual diagnostic thresholds or accurate measurements. They are solely used for illustration purposes.