Is it possible to set up an ON KEY LABEL to return a string to the current editbox?

I want to do something like
On Key label Ctrl+Alt+F1 "This is a beautiful day!"
and as I'm typing along in my editbox have Ctrl+Alt+F1 insert
"This is a beautiful day!"
at the current cursor location. But when I try to assign this I get a syntax error.

I also tried
On Key label Ctrl+Alt+F1 This.Value = This.Value + "This is a beautiful day!"
and
On Key label Ctrl+Alt+F1 ? "This is a beautiful day!"
but these also gives a syntax error.

TIA
Rick