Best guess is that you need to use this expression:
"$$Alpha = " & $$Alpha & ¶ &
"$$Beta = " & $$Beta
And here's another way to get the same result:
List ( "$$Alpha = " & $$Alpha ; "$$Beta = " & $$Beta )
PS. Beg, borrow, steal or otherwise acquire the needed funds to get FileMaker Advanced. By using it's data viewer and script debugger, you can step through a problem script step by step and see the value of every field and variable for every step without needing to insert show custom dialog steps. And if any script triggers are being tripped by your script and the triggered script then pauses your script to run, you'll see those pop up into the debugger as well--which can be a true "light bulb" moment for you.
This can save you many hours of frustration with a complex script that isn't working for you.