To Edit Text That Contains Enter Data Fields Using the Text Editor

Select Edit Text ( Drawing > Annotate > Text > Edit Text ).
Do one of the following:

Enter a data point to select the text element to edit.

or
Double-click a text element.
To edit the constant text, simply make your edits in place.
(Optional) To edit an enter data field’s value or properties, double-click the field.
The Edit Enter Data Field dialog opens, allowing you to control the current value, length, and justification.