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iOS Build a Simple iPhone App with Swift Improving Our User Interface Finishing Up Our Layout

Niilo Pirttijärvi
PLUS
Niilo Pirttijärvi
Courses Plus Student 2,354 Points
Posted by Niilo Pirttijärvi
Niilo Pirttijärvi
Courses Plus Student 2,354 Points

Xcode does not allow me to press the update constraints constants.

When I'm trying to update the constraints my Xcode 9.1 doesn't allow me to update them. The button is sort of grey as in not a valid option. So how should I update the constraints constants?