Add Document to Omnifocus Script Reporting Error

I am new to scripting; most of what I do is modify something existing for my own purposes. For example, I am trying to use MacSparky"s script to add a document to Omnifocus but so far I only get an error message, even when running it unmodified.

What I want to do is have Hazel scan a document for certain properties to determine if the script should be applied. If so, then it runs the following:

set theDate to current date
set theTask to “Pay Property Taxes”

tell application "OmniFocus"
	tell front document
		set theContext to first flattened tag where its name = "taxes"
		set theProject to first flattened project where its name = "Bills"
		tell theProject to make new task with properties {name:theTask, context:theContext}
	end tell
end tell

I get this as the result:

error “OmniFocus got an error: Can’t make {name:"Pay Property Taxes", context:tag id "e7up0S0J9zI" of default document} into type properties of task.” number -1700 from {name:“Pay Property Taxes”, context:tag id “e7up0S0J9zI” of default document}

Help is appreciated!