In the photo, you can see the RGB heading in the legend..how I change the that heading for value or anything else?
Did you check the properties of Legend in Contents Panel?
Have a look at Work with a legend item—Layouts | ArcGIS Desktop ?
Thanks for your replay. However I checked that already and the only that you can change in each content of the legend is:
Show or hide the layer name, group headings, labels, or descriptions.
Change the arrangement of patches, labels, and descriptions.
But not the heading itself .
Cheers
As of 2.2.1, it is now possible to double-click on "Value" and enter any text you want.