EA Extern Variables text message

[[Deleted]]

Hi,

When You go F7, you see the input box for the EA showing all the extern variables.

How does one place in those input box EA extern variables a text message to remind me what some of the inputs are for variables/

Like

extern int Period = 1;
extern string Test 1 = daily, 2 = weekly, 3 = monthly;

So I see "Test 1 = daily, 2 = weekly, 3 = monthly" when I go F7 as YELLOW String message, with input demands from the user ?

How is this done ? ( The above does not work, mt4 gives error message) ?