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#announcements
Title
# announcements
h

helpful-carpenter-3208

03/14/2022, 6:32 AM
Another question about targeting the feature flag. I can see there is a type of feature flag about targeting and can config dynamic filter rules. but if it’s possible to choose the target user with dynamic rules on client side? like we want to use a very complex rule to decide who should enable the feature which can’t config easily in the growthbook side.
f

fresh-football-47124

03/14/2022, 6:43 AM
yes, it is possible - we actually let you set very complex rules through the UI
you can click on 'advanced' when choosing the targeting conditions, and enter arbitrary rules using JSON
h

helpful-carpenter-3208

03/14/2022, 6:50 AM
I mean what if our rule can’t be set through UI?
f

fresh-football-47124

03/14/2022, 6:51 AM
the feature list is just a JSON object, so you can add to it after you fetch it
technically you don't need to use our UI for the feature rules at all, the SDKs are standalone rule engines
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