ios - Checking if text fields are empty cause error in Swift 2 -

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i trying check if textbox has no value.

when this: 

if(useremail?.isempty || userpassword?.isempty || userpasswordrepeat?.isempty)

i following error enter image description here

i tried adding "?" before ".isempty" error won't go away enter image description here

any ideas?

try this.... 

if txtemail.text?.isempty == true || txtpassword.text?.isempty == true || txtrepassword.text?.isempty == true{         print("true") }

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