Complete company name as expression in SSRS 2012

=Microsoft.Dynamics.Framework.Reports.DataMethodUtility.
PostDataMethodEvaluation(Microsoft.Dynamics.Framework.Reports.DataMethodUtility
.UpdateAxContextPartition(Parameters!AX_CompanyName.Value, Parameters!AX_UserContext.Value, Parameters!AX_RenderingCulture.Value, Parameters!AX_PartitionKey.Value),Microsoft.Dynamics.
Framework.Reports.DataMethodUtility.GetFullCompanyNameForUser
(Parameters!AX_CompanyName.Value, Parameters!AX_UserContext.Value))