Often the need to show the company name is very important in SSRS reports for Microsoft Dynamics AX 2012. This is very useful in Multi-company set-up.
To achieve this create your textbox, right click and in the context menu select expressions. Use the following expression to return the current company =Microsoft.Dynamics.Framework.Reports.DataMethodUtility.GetFullCompanyNameForUser(
Parameters!AX_CompanyName.Value,Parameters!AX_UserContext.Value) I hope this is helpful.