Hi Rakesh,
Data : lv_field type string value 'ABC123a$'.
Replace REGEX '[A-Za-z0-9]' in lv_field with ''.
lv_field contains $'.
The above statement replaces letters A,B...Z or a,b,..z or numbers 0,1,..9 with Space.
To remove speacial characters include backslash character before special character, like to remove / symbol precede it with \/.
Regards,
Ravikiran.K