how to customize Add Log Time Format: *

[Uwe Brauer]

According to the documentation. 
I can have the log-time-format either in ISO 8601 or 
as returned by `current-time-string', or other.

current-time-string is a built in function so I don't know
its syntax.

So I thought of having this 

(defun my-insert-log-time ()
  (interactive)
  (insert 
   (format-time-string "%m-%d-%y %H:%M")))

Add Log Time Format: 
* International ISO 8601 format
* Old format, as returned by `current-time-string'
* Other: (my-insert-log-time)

But it did not work. 
Somebody can help me?

thanks


Uwe Brauer