Based on the given feature description and task, we need to analyze the relationship between the feature "O_L_POST" and the target variable "chronic heart failure".

To conduct this analysis, we would need the myocardial infarction complications data for the patient, specifically the values for the "O_L_POST" feature.

One possible approach to analyze the relationship is to compare the distribution of values for the "O_L_POST" feature among patients with and without chronic heart failure.

Here is the dictionary representing the relationship between the feature "O_L_POST" and the target variable "chronic heart failure" based on the available information:

```json
{
	"no": ["no"],  
	"yes": ["yes"] 
}
```

According to the given categorical variable description, the feature "O_L_POST" can have only two possible values: "no" or "yes". Since we don't have any information about the patients without chronic heart failure having "O_L_POST" as "yes" or patients with chronic heart failure having "O_L_POST" as "no", we can't provide any other values in the dictionary.

Please note that this is a preliminary analysis based on the available information, and a more comprehensive analysis can be conducted if additional data or specific relationships are provided.