Dts Parameters, More Values In One Parameter

hy all,

i'm using the object transform data task from a server (where i'm not dbo) to another server (where i'm dbo).

i'm getting data from a table. i need to select just some records from this table. i need to use a query like this one below...

select * from {table_name} where operationedate in ('20070101', '20070205', '20060524')

... cause everytime i run the dts the operationdate field must be filtered on different date.

so i tried to use the parameter from a global variables. i've tried lots of things but everytime i failed.

i used to try:

select * from {table_name} where operationedate in (?)

but it doesnt work!

any one can understand what i try to explain and even help me?

bye

nicola