In Screen 3 there is a problem

I am making a teacher observation program. In screen 3 there is a bug as per screenshot attached rises... Kindly help

TestOfTeacherObservations.aia (141.1 KB)

You are developing on iOS. Not all the properties for Listview have been ported yet:

I would like to note that the particular property being used, setTextColorDetail, is available in the beta version on TestFlight and will be in the next release.