open URL to email message in apple mail from filemaker

I have connected all my gmail email accounts to apple mail. I want to create a link between a specific email message inside filemaker so that when I click on the link in FM it will open the email message. I do not particularly care wether it opens the email in the apple mail app or in safari or inside FM. I know how to retrieve the message ID of the email in apple mail. I tried placing the message ID path preceded by the prefix "message://" inside a field in FM. Then I call the script OPEN URL with the field contents as a parameter. The script activates my email app ( Apple Mail ) but does not go to the specified message. Instead it just displays the last viewed email in Apple Mail. I tested the same URL path in a safari window , it seems to work fine. What am I doing wrong pls ?
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kittenwhiskyAsked:
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Will LovingPresident, Dedication Technologies, Inc.Commented:
I assume that when you use the URL in Safari, it's displaying the email within Safari. If thats the case, try this:

Create a layout in FileMaker with a WebViewer object and set the contents to a variable like $$EmailURL. Then in your script set the variable to the URL.

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