my WPF Desktop Application objects do not evaluate the IsChecked as true or false

I have a WPF Dekstop application that contains some control objects

These objects have the property "IsCheck" and evaluate as either "true" or "false"

I can return the object property booleans, and even convert ToString

But the "IF" statements always evaluate as "true" even when they are "false"

Looking at this property in the TestComplete "Object Browser" they all show the "IsChecked" property as being boolean

So why does the following always evaluate through the "True" path. Even when IsChecked is False?

if (controlSwapper.toolContainer.ContentPresenter3.SurfaceToggleButton.IsChecked) {

  do_something;

} else {

  set the IsChecked property to true;

  do_something _else;

}