src/main/java/hudson/plugins/dry/DryReporterDescriptor.java
public FormValidation doCheckNormalThreshold(@QueryParameter final String highThreshold, @QueryParameter final String normalThreshold) {
        return THRESHOLD_VALIDATION.validateNormal(highThreshold, normalThreshold);
    }
public FormValidation doCheckNormalThreshold(@QueryParameter final String highThreshold, @QueryParameter final String normalThreshold) {
        return THRESHOLD_VALIDATION.validateNormal(highThreshold, normalThreshold);
    }
Performs on-the-fly validation on threshold for normal warnings.

@param highThreshold
the threshold for high warnings
@param normalThreshold
the threshold for normal warnings
@return the validation result