Update readme.md

readme.md

@@ -35,7 +35,7 @@ Replace the `<variable>` placeholders with the corresponding values specific to
 
 ## Variable Definitions and Valid Values
 
-- `disease_label` (string): Specifies the disease label. Valid values: CAD, Heart Failure, CKD, COPD.
+- `disease_label` (string): Specifies the disease label for Phenotype prediction task. Don't provide the line if the task is not Phenotype. Valid values: CAD, Heart Failure, CKD, COPD.
 - `timePrediction` (integer): Specifies the time prediction. Valid values depend on the task:
   - For Phenotype task: 30
   - For Mortality task: 0