How to setTarget for many NSTextfield in KSPasswordField in Cocoa

How to setTarget for many NSTextfield in KSPasswordField in Cocoa

I used KSPasswordField class, i know setTarget for 1 textfield. Now i want
to settTarget for mutiple Textfield ( mutiple textfield created dynamic)
because i have only one Checkbox to show password and mutiple Textfield.
This is my code:
Created NSTextfield dynamic :
for(int i=1; i<=number;i++)
{
ssidtxt = [[NSTextField alloc] initWithFrame:NSMakeRect
(50,textfield_Y,130,25)];
[ssidtxt setBezelStyle:NSTextFieldSquareBezel];
ssidtxt.tag=i;
[ssidtxt setAutoresizingMask:NSViewWidthSizable];
[guiView addSubview:ssidtxt];
// textfield_Y -=30;
[ssidtxt release];
}
And this code for checkbox to setTarget:
[showPassCheckbox setTarget:password_txt];
[showPassCheckbox setAction:@selector(toggleTextShown:)];
Do you have any suggestions? Thanks a lot.