Hello, I'm using mod_xml_curl to provide dialplan. In my application, I need to differentiate if a call has entered the dialplan again due to uuid_transfer or due to Blind Transfer. I know I can recognize a Blind Transfer by checking variable_sip_h_Referred-By and variable_sip_refer_to. However, these variables are not cleaned up when the call reenters the dialplan due to application transfer or uuid_transfer. I realize I can differentiate them by adding some prefix like this: uuid_transfer TRANSFER,DestinationNumber XML default Or it is my responsibility to call application set or uuid_setvar to unset the variable(s) in this case? it seems to me the bad thing here would be to have to add lots of preventive <action application="set" data="sip_refer_to=" /> in my dialplan. Before doing so I thought in ask if the REFER-related variables being preserved upon dialplan reentry would not be a bug (well, it could be a feature useful in some scenarios I suspect). br, takeshi