Get the last text on the field and put another text on it

[chadski021]

is there a way to get the last text on the field and put another text it

 

for example:

 

the field contains 

 

the statement is true and correct. after i click a button it insert a text

 

the statement is true and correct. (Mailed a copy of this)

 

 

[doughemi]

The script for the button should contain

 

Set Field[theFieldName; theFieldName & " Your added text"]