Including Standalone report

[zeeshanhashmi]

Hi,

I have a few main reports divided in folders. Some of them are made so that they can be used as sub reports in main reports for example a Header Part and a Footer Part etc etc.

My main reports are like this: 

ROOT > Reports > HashmiTech > Main Report 1

ROOT > Reports > HashmiTech > Main Report 2

ROOT > Reports > HashmiTech > Main Report 3

And those that i want to be used as Sub reports are like this :

ROOT > Reports > HashmiTech > Sub > Sub Report 1

ROOT > Reports > HashmiTech > Sub > Sub Report 2

ROOT > Reports > HashmiTech > Sub > Sub Report 3

Please guideme how I can add Sub Report 1 in my Main Report 1 and what subreport expression I should put ?

Thank you
ZH