Hi All, When using inbound ESL method uuid_setvar I understand the variables will get prefixed with "variable_" such that... uuid_setvar chan123456 MyVar MyVal ...reports in the next event as: [variable_MyVar] => MyVal My issue is that i'm building an event based system that stores custom channel data using this operation and i don't want user entered variable names overwriting exiting channel data. I am counteracting the above concern by simply adding my own prefix to all set/get operations but I am still interested in finding out the significance of these variables and if its only FreeSWITCH modules (i.e. "playback_terminators" for playback application) that populate those in the "variable_" list or if these are used deeper in the core as well? Any further information would be really useful, thanks, Callum ______________________________ Callum Guy Developer X-on Framlingham Technology Centre Station Road, Framlingham, Suffolk, IP13 9EZ T 0333 332 0116 E callum.guy@x-on.co.uk X-on is a trading name of Storacall Technology Ltd a limited company registered in England and Wales Registered Office : Avaland House, 110 London Road, Apsley, Hemel Hempstead, Herts, HP3 9SD Company Registration No. 2578478 This email has been sent from X-on.The contents and attachments are confidential to the sender and the intended addressees.If the message is received by anyone other than the addressee please return the message to the sender by replying to it and then delete the message from your computer without copying or disclosing the contents to anyone.Opinions, conclusions and statements of intent in this email are those of the sender and do not bind X-on unless confirmed by authorised representatives independently of this message.While best endeavours have been taken to avoid transmission of viruses, it is the responsibility of the recipient to scan for these.Please note emails sent to and from X-on are routinely monitored for record keeping and quality control, to ensure regulatory compliance and prevent unauthorised use of our systems. Please consider the environment before printing this email.