Question

Why does the following code not work?

[Confirm addTarget:self 
            action:@selector([FunctionsApp Synch_Data:CompIDS]) 
  forControlEvents:UIControlEventTouchUpInside];

given:

FunctionsApp: its other class

Synch_Data:its function in FunctionsApp

CompIDS: its MSmutableArray

Answer 1

FunctionsApp *functions = [[FunctionsApp alloc] init];//of course u need to use your own init method
[Confirm addTarget:functions action:@selector(Synch_Data) forControlEvents:UIControlEventTouchUpInside];

the selector u pass is just the name of the method this is passed to the target who in turn checks if it exists and then calls it. u cant use a mutable array as a selector. since confirm is a button u should use a method with signature - (void)buttonClicked:(id)sender where sender will be the button. and also since the selector is not a class-method you do not call it like this [FunctionsApp buttonClicked:] but instead you use the FunctionsApp object reference as target ( i.e. where the method exists as target).
and please elaborate your question next time and be a bit more concrete in what things are.