linking parameters

Hi All,

I have a main report having 5 sub report inside it.This main report is just a container report only.

I kept all sub reports in different report footer sections.

Now I have a transid parameter for all the sub reports coming from query.

But in my main report I don't have transid parameter.So

1) Can I make a report level parameter transid in main report and link to all sub reports

2 )My main report not connected with any data source where as my sub reports connected with one data source.So will there be any problem with this.

I mean my sub report will get the data from database.

Please suggest