Solved your problem ?
Now that I’m rested 
I can see that var location is also a Ftransfrom.
So as I said no Ftransform in that function, Location parameter is suppose to input a value for the function return that you have there that returns parameter “Item” I believe that is not of Ftransform Type.
ElementType is the type being return there with the name "Item:
Maybe element type accepts all things maybe not Ftransform, or maybe also Ftransform.
I got a page here
From the page
operator==
(
TArrayView< ElementType, SizeType >,
TArrayView< OtherElementType, Other…
)
So if you are trying to match things this should be a good resource.
Why is it giving “==” error , I don’t see this operator in your code now posted by you
I understand the conversion error tho on the Ftransform where you are trying to fit Ftranssform into universal types and maybe they don’t like Ftransform.