SetPolicy - Using SSRS Web Service

Am using the Web service of SSRS to assign the roles for a user (which is already available in Report Manager).

Policy[] p = new Policy[1];
p[0] = new Policy();
Role[] R = new Role[1];
R[0]= new Role();
//RoleGroup Rg = new RoleGroup();
R[0].Name = "Report Builder";
p[0].GroupUserName = "MyMachineNamevikas";
rs.SetPolicies(@"/",p);

The same I have tried with SetSystemPolicy method also.

Policy[] p = new Policy[1];
p[0] = new Policy();
Role[] R = new Role[1];
R[0]= new Role();
//RoleGroup Rg = new RoleGroup();
R[0].Name = "Report Builder";
p[0].GroupUserName = "MyMachineNamevikas";
rs.SetSystemPolicies(p);



Where, MyMachineName - is the machine name where SSRS is residing.

bvikas - windows local machine user



I have used the above codes in achieving the mapping between the SSRS role and the windows local user. Getting error on this. I even thought of directly doing the mapping by putting entry in SSRS database. But found that few fields are encrypted and I would prefer to acheive it through API way.

-Muthu