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I loved this tutorial! Thank you! I had two problems I was hoping someone would comment on: 1) I couldn't get the formatter to work at all. I tried both the 10.4+ and 10.0+ versions. No constraints I entered had any effect at all. Even though I could see the little brackets by the SetTo input window with the min/max constraints. 2) I wanted to have the displayed value also reflect the initial value of the slider (50), but it starts out blank until you change it. Any attempts I made to change it on the controller classe's Init function either did nothing or crashed the machine. (Would this work if I had a view class?) So I did the inelegant approach of creating a timer with a callback that sets the values. That works, but there has to be a better way to give a text field an initial value. Thanks so much - seriously, I've tried several XCode tutorials and yours helped me the most. - Jeff