Editing Custom Field Text

[tmcquade]

I've created several custom text fields:

When I insert the field in the mtext editor I see the contents of the field with a gray background as expected.  When I right click on the field and choose "Edit Field..." I get this box:

I can place the cursor in the box that displays the contents of the field and I can highlight the text but cannot edit the the text.  Is there a way to edit the field contents without going back to File/Drawing Properties/Custom?

[pendean]

You cannot "override" a FIELD and it stay a FIELD: just EXPLODE it to be TEXT then edit away as you wish to do since editing the source is not an option for you.

[TheCADnoob]

That information only flows in one direction. 

You can just type the DWGPROPS command to open the drawing properties dialog. Itll be quicker than going through the file menues.