assembly for Test Studio

Hello,

I am writing a assembly for Test Studio

I have tried to specify the base class that my class inherits as being BaseTest and BaseWebAiiTest

I have a Manager instance that is initialized to Manager.Current.

I can reference the myManager.ActiveBrowser... just fine.

But when I try to create a wait using:

HtmlInputCheckBox _checkbox = myManager.ActiveBrowser.Find.ByExpression<HtmlInputCheckBox>(DomString);

HtmlWait waitObj = _checkbox.Wait;

           
_checkbox.Wait.ForVisible(5000);

I get the following error when the coded step executes:

System.NullReferenceException: Object reference not set to an instance of an object.

The line that causes this exception is

HtmlWait waitObj = _checkbox.Wait;

I cannot find what object that needs to be referenced to instantiate this wait object.

Thanks