Write REGEX for a string pattern

Question

Hi All,
I am new to using regular expression and writing the patterns, I am looking to write a pattern for below formats and do a FIND REGEX:
A123456-01-123456789-123   and A123456-01-123456789-ABC
DATA: regex TYPE REF TO cl_abap_regex,
      res   TYPE        match_result_tab,
      text  TYPE        string.
CREATE OBJECT regex
    EXPORTING pattern      = '\(.\)\1'
              simple_regex = 'X'
FIND ALL OCCURRENCES OF REGEX regex IN text RESULTS res.
could you help me write the pattern to check if user has entered string in formats A123456-01-123456789-123   and A123456-01-123456789-ABC
Thank you
Depp

Answer 1

Hi Manish,
First of all sorry for getting back so late..was stuck with project delivery...and Thank you for your solution. Only one scenario failed i.e., I didn't mention that the value 01 in the examples, is constant in strings A123456-01-123456789-123   and A123456-01-123456789-ABC.
which means it has to be always 01 any other value than 01 the sy-subrc should not be zero.
I will also be thankful if you could share me the document(s) which help us write the above patterns( '^\w\d{6}-\d{2}-\d{9}-\d{3}$' ; '^\w\d{6}-\d{2}-\d{9}-\w{3}$' ).
In the meanwhile I will also do some R&D with your reply to solve the failed scenario.
Regards,
Depp