REPLACE ALL OCCURRENCES not working

Hi all,

I have a variable abc typed to text60.

This abc = 'Validity date : 10.12.2014'.

However I only want the value '10.12.2014'

So I proceed to use:

CONSTANTS: v_validity_text(53) VALUE 'aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ:'.

REPLACE ALL OCCURENCES OF v_validity_text in abc with space.

CONDENSE abc.

I tried also:

REPLACE ALL OCCURENCES OF regex 'aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxxyYzZ:' in abc with space.

CONDENSE abc

How come both is not working?? Anyone have any idea?