[SR-Users] save a Q850 cause reason from a reply

Hi, the gateway i use for sending call to pstn has an option of sending a header with Q850 reason. it looks like this: " Reason: Q.850;cause=17;text="UserBusy" Reason Protocols: Q.850 Cause: 17(0x11)[User busy] " now, i need to save the reason for reports. the reason changes and i am trying to find a way to parse it and save the code only. usualy i use the "search" function to get text from headers that are the gateway's inventions :-) here i can find the text "Q850....." but how do i get the cause code? i guess i cab write something long with textops and parsing. but, is there a better and nicer way to perform it? thanks, Uri