Change SMS text for incoming phone-calls

[lekzzz]

Although I'm Dutch I like my system language to be in English. What I would like to know if it's possible to change the SMS text for incoming phone-calls when you can't answer the phone. Normally you have a few different possibilities to answer. Just like the screenshot below.

 

[lekzzz]

I've just found it:
telephone> callsettings> Quick responses>...