How can I call a handler from within an application tell block?

Applescript FAQ Miscellaneous Info
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#1

Some times, when you call one of your handlers within a ââ?¬Å?tell blockââ?¬, it will be redirected to the targeted application and it will try to execute it as part of its commands; so, this will throw an error. To execute your handler, you will need to add an of me reference following your handler call (or use the possesive my). For example:

tell application "Finder"
	-- Do Stuff 
	myHandler() of me
	my ownHandler()
end tell