How can i use .net class in NAV

Hi everyone,

I am new to nav developement. I have vaery simple Question, I Made a simple class liabrary in .net that is as follows:


namespace test
public class Class1
public int myVar { get; set; }

and build it and complied dll paste on the folder 

"C:\Program Files\Microsoft Dynamics NAV\100\Service\Add-ins"

but when i create a variable in NAV of type dotnet then i am not able to see this class liab. 


please suggest if i am doing wrong. or how can i do this ??