SetTitle will set the text shown on a touch button created by ContextActionService/BindAction|BindAction. Specifically, this sets the TextLabel/Text property of a TextLabel within the ImageButton that would be returned by ContextActionService/GetButton|GetButton. If no such bound action exists (e.g. nothing is returned by GetButton), this function does nothing and throws no error.

This function is part of a family of methods that customize the touch button of an action. Others in this family include ContextActionService/SetImage|SetImage and ContextActionService/SetPosition|SetPosition.