I see you tried "conversion operators CDbl, CInt and Cstr", but this is in SSRS, right?

How about trying Convert or Cast in the SQL, to say a varchar field. ...

amadeu_j, I appologize, but I just tried this and this creates a "forward depenency" error message (I thought that I have done this in the past, again, sorry for misleading...

You do need to refresh the report after changing a parameter. To prove whether it is working or not, temporarily display the parameter fields in the body of the...

The only way to add radio buttons in SSRS is to have a parameter that is of data type "Boolean". Obviously you would then only be able to have...

I am going to have to assume that the second parameter is hidden, otherwise this would appear to be near impossible (or extremely complicated), since whatever logic you use will...