CRM Text Changeable "C" to be written in the Logs

Hi Gurus,

I have the text configuration as shown below.

I have a requirement to display the standard text "ZTEMP" under text type ZTEM. Also, The user can change the text of ZTEM and save it in the logs.

I know its a standard functionality that you cannot append in the logs text types of changeable "C" - But i want to defy the standard functionality.

So far, i have figured out how ZTEM can be changeable (by reversing SAP note 1674570 - Text is editable when Changeable is set to "C - Display")

The only problem i am facing now is how to append this to the logs.

I am finding the class/function module that hinders text type of changeable "C" to be written in the logs.

Does anyone have any idea?

Thank you very much in advance