# Change Binary Category Details

You can use the `BinaryCatSetDetails` action to change the fields for a binary category from their default values. For details on this action, refer to the IDOL Server Reference. For example:

    http://12.3.4.56:9020/action=BinaryCatSetDetails&Name=spam_binarycat&MinDocOccs=12&TestTermsPerDoc=20

This action instructs the IDOL Category component to change the value of the parameter `MinDocOccs` to `12`, and the value of the parameter `TestTermsPerDoc` to `20`, for the binary category named `spam_binarycat`.

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