filter.distance dowsn't work

Hi everyone;

I have a problem, I want to filter small movements of the device (not real movements), but the filter doesn't works.

My traccar.xml file:

    <entry key='filter.enable'>true</entry>
    <entry key='filter.invalid'>true</entry>
    <entry key='filter.zero'>true</entry>
    <entry key='filter.duplicate'>true</entry>
    <entry key='filter.maxSpeed'>250</entry>
    <entry key='coordinates.minError'>20</entry>
    <entry key='coordinates.maxError'>30000</entry>
    <entry key='filter.future'>86400</entry>
    <entry key='filter.distance'>50</entry>
    <entry key='filter.skipAttributes.enable'>true</entry>
    <entry key='filter.skipAttributes'>ignition</entry>

Someone knows where is the problem?

Regards!