Help- SubReport type generates Type Mismatch error?

[MeBeFree]

What am I doing wrong?

I have a main report - LongReport - that has a subreport - XSubRpt

In my OnFormat event procedure I declare a variable:
Dim Rpt as SubReport

then I set the report:
Set Rpt = Reports![LongReport]![XSubReport]

this gives me a Type mismatch runtime error.

If I change the declaration to:
Dim Rpt as SubForm

I get no error but then I can't use the section property, which is what I really want to get to.

What am I doing wrong?

Thanks

Patti