Hjælp til System.Security.SecurityException og System.Net.WebPerm

Hej
Jeg har lavet noget kode bruger en web sevice oppe fra google men når jeg vil bruge koden når jeg den her fejl:
System.Security.SecurityException: Request for the permission of type System.Net.WebPermission, System, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 failed. at System.Security.CodeAccessSecurityEngine.CheckHelper(PermissionSet grantedSet, PermissionSet deniedSet, CodeAccessPermission demand, PermissionToken permToken) at System.Security.CodeAccessSecurityEngine.Check(PermissionToken permToken, CodeAccessPermission demand, StackCrawlMark& stackMark, Int32 checkFrames, Int32 unrestrictedOverride) at System.Security.CodeAccessSecurityEngine.Check(CodeAccessPermission cap, StackCrawlMark& stackMark) at System.Security.CodeAccessPermission.Demand() at System.Net.HttpRequestCreator.Create(Uri Uri) at System.Net.WebRequest.Create(Uri requestUri, Boolean useUriBase) at System.Net.WebRequest.Create(Uri requestUri) at System.Web.Services.Protocols.WebClientProtocol.GetWebRequest(Uri uri) at System.Web.Services.Protocols.HttpWebClientProtocol.GetWebRequest(Uri uri) at System.Web.Services.Protocols.SoapHttpClientProtocol.GetWebRequest(Uri uri) at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) at GoogleSearch.com.google.api.GoogleSearchService.doGoogleSearch(String key, String q, Int32 start, Int32 maxResults, Boolean filter, String restrict, Boolean safeSearch, String lr, String ie, String oe) at GoogleSearch.GoogleWebPart.RenderWebPart(HtmlTextWriter output)

Jeg bare eller buildet den med en snk nølge og skriver dens hex værdig ind i min "security policy" fil

<IMembershipCondition       
                        class="StrongNameMembershipCondition"       
                        version="1"       
                        PublicKeyBlob="0x00240000048000009400000006020000002400005253413100040000010001004B6423AFA5540DC0C9A7DCCEDE15CDDB1D4ABE3B639A9BEBB9B900DA5B62D97DD2CECC0ED0CCED850372F34C649CD5DA44C6D85D7F0DBB671B9E5861B8C7E29049F86B54389A37C5DFAC0F9C913D2497AF19196F09E9566F56D2FDBCEE178BF231F8AFF0AA97CCAB3EF80124AE85F51A920F38C1F45A178F2420E2EBFD0CCCE0"       
                        Name="GoogleSearch"
                        Url="$AppDirUrl$/bin/GoogleSearch.dll"
                        />