L7 regexp

Hi all,

i need to use regexp

/(^POST / HTTP/1.[01].|\s^Host: somehost.tld)/mg

which can detect POST to somehost.tld.

The test string what is matched looks like (not really):

POST / HTTP/1.0qdf dqgf qf g
dfgd

qwert

qewrt315t

Host: somehost.tld
gf
qwresg
qeg
qefg

The regexp was tested at http://regex101.com and works well, but in ROS is some limitation, or i don't know how to use this regexp in ROS L7 rule.

Can anybody help me,please?

Sincerely