i need some help to resolve an error in the code below.

VB Code:
  1. public struct Domains

  2.     {

  3.         public string id;

  4.         public int start;

  5.         public int length;

  6.         public domainType type;

  7.         public string value;

  8.     }

  9.  
  10. Domains domain1;

  11. ...some code..

  12.  
  13. [U]domain1 =0;[/U]

  14. [U][B]ERROR: Cannot implicitly convert type 'int' to 'TPT.Configurator.BillOfKitsDesign.ConfiguredKits'[/B][/U]


the underlined code is the region with error and the error message is highlighted immediately below the code in bold underlined. I am new to C# and any help would be immensely appreciated.