F# Quotation Generating very strange compile error -

i trying work out why following line:

let emailquotation: expr<loginview -> string> = <@ fun (v: loginview) -> v.email.text @> 

is failing compile error, saying "lookup of object on indeterminate type...". property viewmodel.email xamarin forms entry, containing text property.

what more information compiler need, , why not able interpret expression?

my solution ugly. can this:

let emailquotation = <@ fun (v: loginview) -> let email: entry = v.email in email.text @> 

the quotation wasn't able interpret type of v.email. i'm no expert on code quotations, there may way make compiler pick type in single expression.