Adding Content Plugin triggering to your custom developed field

-- If you have duplicated a built-in field e.g. 'text'
then these parameters already exist the .xml file of your custom field
so you do not need to do anything more, other than edit your field configuration to use them

--  If you have not duplicated a built-in field then, you can copy these parameters from a built-in plugin, e.g. open
plugins/flexicontent_fields/text/text.xml

and copy parameters:
trigger_onprepare_content
trigger_plgs_incatview   (this is optional if you want to trigger plugins in category view too)
plugins