Reject HMR on dialled number

Good day,

I am in need of the community's assistance, with creating a HMR.

Basically what I need to accomplish is to match on requests, and if the To number/RURI starts with a '0' and it is 13 digits or longer the message should be rejected, but if it starts with '00' is should be ignored,

On all the REGEX I have tried it either doesn't match or matches on '0' and '00'

This is the base HMR I am working from:

sip-manipulation

        name                                    BlockInvalidNumbers

        description                             BlockInvalidNumbers

        split-headers                          

        join-headers                           

        header-rule

                name                                    matchRURI

                header-name                             request-uri

                action                                  reject