*Received value*
MySQL crashed errno 123
*Macro*
{{ITEM.VALUE}.regsub("^([A-Z]).*([0-9])", " Problem ID: \1_\2 ")}
*Output*
Problem ID: MySQL_123

However,it will not do as what we have expected.

*The correct Macro*
{{ITEM.VALUE}.regsub("^([a-zA-Z])[^0-9]([0-9]+)", " Problem ID: \1_\2 ")}
{{ITEM.VALUE}.regsub("^([a-Z])[^0-9]([0-9]+)", " Problem ID: \1_\2 ")}
{{ITEM.VALUE}.regsub("^(\w+)[^0-9]([0-9])", " Problem ID: \1_\2 ")}