Dynamic security using Security table in SSAS Tabular model

Hi, Platform : [b]SSAS Tabular model (VS 2010)[/b]I need to apply Dynamic security using Security table(manually created) in Tabular model, Need to apply filter for 2 tables. I am able to create roles in Tabular model using USERNAME() and LOOKUP() function it worked fine. But the problem is when i am trying to give full access for a particular column and limit the access in other column, it is not working properly.Please find screenshot and guide me where i am falling short. In the Security table wherever you find ALL it means full access.Do let me know if further explanations required.Thanks,Sundar