Post messages while typing using globalKeyUpAction and findRegexp

Questions
#1

I’m trying to make SuperCollider recognize certain words when i type them (followed by a space) and then post useful messages. So, the idea is to store those words and messages as key/value pairs in a Dictionary/Event and then use a globalKeyUpAction and findRegexp to trigger the posts. There seem to be things happening in the .do function below that i don’t understand though. The matching seems to work but asking for the data at that key in the Event returns nil for some reason.
Can anyone explain what is happening here?

(
x = "^why $|^is $|^this $|^not $|^working $";
e = (\why: "I", \is: "don't", \this: "really", \not: "know", \working: "?");

Document.globalKeyUpAction_({
	Document.current.currentLine.findRegexp(x).do{|match|
		//match.postln;
		e[match[1].asSymbol].postln;
	};
});
)

// type these words followed by a space
why 
is 
this 
not 
working 

e["why".asSymbol]; // works
#2

At first glance, you’re probably actually getting e["why ".asSymbol].

hjh

#3

Ah! Of course. Thanks. Well spotted!