# Add operator to segment filters

**URL:** <https://forum.mautic.org/t/add-operator-to-segment-filters/19404>\
**Category:** Development\
**Tags:** development\
**Created:** [May 10, 2021, 11:50am UTC](https://forum.mautic.org/t/add-operator-to-segment-filters/19404 "2021-05-10T11:50:05Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Cezar](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/cezar/32/5152_2.png) [@Cezar](https://forum.mautic.org/u/Cezar)\
**Post date:** [May 10, 2021, 11:50am UTC](https://forum.mautic.org/t/add-operator-to-segment-filters/19404/1 "2021-05-10T11:50:05Z")

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Hi,  
I’m trying to add a new operator to the segments filter.  
But the event LeadEvents::LIST\_FILTERS\_OPERATORS\_ON\_GENERATE is not triggered no matter what I do.

Does anyone know what triggers the above event?