How Do I Copy an Email Link from the Postbox Email Client to a Fantastical 2 Event?

Questions & Suggestions
3

After little success with the above macro, I have simplified it a ton by just using AppleScript. I simply have KM trigger and run the AppleScript with a keyboard shortcut. The script is below in case anyone else has the need described in my OP above. The script first gets the URL of the email message from Postbox and then asks the user for the event string. Then it, creates a new event in Fantastical 2 using the user input and fills in the notes field with the message URL.

--Getting the Message URL from PostBox email client--
tell application "Postbox"
   set emailMessage to item 1 of (get selection)
   set messageURL to URL of emailMessage
end tell

--Getting input from user containing event they wish to schedule and setting the input to the variable called eventSyntax--
set userInput to display dialog "What is the event you would like to schedule?" default answer ""
set eventSyntax to text returned of userInput

--Paste the user data into fantastical 2--
tell application "Fantastical 2"
   --The "add immediately command executes the passage of information with no interaction from the user--
   parse sentence eventSyntax notes messageURL with add immediately	
end tell