Page Composer

I'm trying to write an expression in Configuration>Sandbox>Page Composer and having trouble.
Can someone please review this expression and tell me how to fix it?
This is to return a value 'CCD' for DeliveryChannel (found on Supplier Site> Payment Attributes)
#{(bindings.VendorTypeLookupCode.inputValue == 'TAX AUTHORITY' and startsWith(bindings.SupplierSiteCode.inputValue, 'A')) ? 'CCD' : ''}