[Freeswitch-users] variable to know who initiated call transfer

hi, im stuck in one scenarion where A calls B and either of them can initiate a transfer using *3 and bind_meta_app in features.xml but i need a variable which can tell me which leg initiated the transfer, like was it A or B coz no matter who did i always see call going to features from A as A dialed B. the reason i need this is so i can add a hash value for the ext that dialed *3 i have been searching for such a variable like crazy but not able to find, i just want to know the ext number of the person initiating call transfer -- Regards, Bipin