Dealing with long text in ssas cube

How to place nvarchar data with max size in SSAS Cube 2012 version

In 2012 visual studio if we drag varchar (max ) attribute it automatically takes with data size zero.  And doesn't set any data size property for that attribute. So we have to add it manually in XMLA code . Right click on dimension->go to code mode  add data size property like belowone

<DataType>WChar</DataType>
<Data size>163315555</Data Size>