how to regex ..help

[lihaoxin]

hi. everyone
text:

abcd
234
abcd
123
abcde
444

i want to get ONLY the number "123" ......
i tried to input (?<=abcd)[\w\W]*?(?=abcde)
but i got wrong value

234
abcd
123

THANKS

 

[rostonix]

Try this if you have a new line for each group of numbers

\d.*\d