So is this a formatting question? It is hard to tell with the amount of information that is given here. It would be extremely helpful in this case to have a sample workbook to demonstrate both the problem and the solution.
If it is the question that I think it is, there would be a couple ways to handle it. You'd need to get the currency type into your datasource, or blend it in from a secondary source. Then you could either filter your currency field into one for each currency display type (so the value only exists for a particular currency) and add all of these to the view with the proper formatting applied. Since only one will be non-null for any particular currency only one will be shown at a time. A bit simpler might be to convert the value to be displayed as a string and appending the appropriate currency symbol yourself, i.e.
when 'USD' then '$'+str([Some Dollar Value])
when 'INR' then ...
Let me know if this helps, or help me by laying out what exactly you need.