Creating a feature type for cascade classifier

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I'm trying to create a feature evaluator for the Cascade Classifier. It's supposed to return a numerical value for each feature ID. Could someone tell me the appropriate settings for this type of a feature? Here's what I've used: maxCatCount = 0;
featSize = 1;

It "works", so to speak, but the training starts repeating FalseAlarmRate values after a while in the 1st stage.