dynamic Query - ODBC connectivity

I am trying to create Dynamic Query.Connecting to Sybase database source through ODBC, but I try to pass Paremeter by using @.. It says error. Also If i pass &Parameters!Parametername.Value is also not working.Its not saying error for string values but for numeric it says reror. Also in the Query builder i am not able to give expression by giving = "select some Query".

I fgiven an solution or example would be great. Thanks in advance.

I'm not sure but ... does ODBC support named parameters?
Try using ? as parameter, not a questionmark as prefix but like this:

select *
from bla
where something = ?

|||

ODBC is not supporting naming parameter.

I tried with ? working to pass parameter to my query

It was named as Paramater1 when i preview the report and automatically taking the value as string format.Can we change the description and data type?

But I am trying to use Report parameter. i.e. I am getting the values in combo box if in preview the values i select in the query.

But i am unable to use the Report parametr in the query. could anyone help out passing report parameter to sysbase ODBC query

Thanks Hypo for you valuable respons.