Contact/Friends (Add/Remove) hooks queation

[Erez-Ws]

Hi there,

i am a noob with vbulletin and i have some question about hooks
i already found hooks that do php code when someone registered and update its profile
and now i need hook when someone approve or unapprove someone else as he's friend/contact

someone can help me find those hooks or show me a manual how to create them

tanx

[Erez-Ws]

anyone? please

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