Message Mapping

Hello Experts,

i have the below requirements in Mapping

From the input string it have to find first "7", then it have to send next 9 digits from there on to the target field.

For eg1: if input is "-QET7123456789" output should be "7123456789".

     eg2: if input is "~79992573651234" output should be "7999257365"

Regards,

Ruban.S