Hi,

Check out the following code:

````
(defvar org-concatenated-properties '("AA")
  "A list of property names (strings), which should be computed via concatenation with the parent properties.")

(define-advice org-entry-get (:around (oldfun pom property &optional inherit literal-nil) concatenate-parents-maybe)
  "Concatenate the PROPERTY value with its parent entries' values if the PROPERTY is in `org-concatenated-properties' list."
  (if (not (member property org-concatenated-properties))
      (apply oldfun pom property inherit literal-nil)
    (let ((value-here (funcall oldfun pom property nil 't))
	  (value (funcall oldfun pom property inherit 't)))
      (if value-here
	  (format "%s%s"  (org-with-wide-buffer
			   (if (org-up-heading-safe)
                               (or (org-entry-get nil property inherit literal-nil) "")
                             ""))
		  (funcall oldfun pom property inherit literal-nil))
	(when value
	  (org-with-wide-buffer
           (org-up-heading-safe)
	   (org-entry-get nil property inherit literal-nil)))))))
````

Best,
Ihor


Michael Welle <mwe012008@gmx.net> writes:

> Hello,
>
> Michael Welle <mwe012008@gmx.net> writes:
> [...]
>> (defun hmw/org-prop-append(prop value)
>>   (save-excursion
>>   (org-up-heading-safe)
>>   (format "%s %s" value (cdr (assq prop
>>                                    (car (org-babel-params-from-properties)))))))
>>
>> (defalias 'A 'hmw/org-prop-append)
>
> and I just realise that it works with code blocks only. I guess the way
> to get general property values has to be adapted.
>
> Regards
> hmw
>