Thank you,
It does almost exactly what I need but does not keep the log of previous changes/date stamps. The values in the cell may change several times. So everery time it changes I need a date stamp that would stay and any future date stamps would be recorded on top of the previous ones - to keep a log.
Also preferebly a specific action/cell value that cause the date stamp be recodred as well.
I attached small file and manually formatted comments in few columns to make it easy to understand what I am looking for.

Respectfully,
Art