Looking up dates in a column with a formula

I'm very new to Excel and VBA. With that said, I'm trying to do an IF THEN statement where:

        Dim ExpDate = Date +30
        If Cells(i,6) < ExpDate Then

And the rest of the code will copy a different cell (without the date) on the active sheet onto another sheet.

I've been able to get this to do exactly what I want it to do when searching up a numerical value that resulted from a formula:

       If Cells(i,13)<0 Then

but it's not working for the dates.

Also, (and I don't know if this makes a difference) IF THEN with the dates is the second IF THEN in my FOR NEXT.

I don't know if VBA is comparing the formula with the ExpDate or if it's reading the acutal date and comparing it to ExpDate.

Can someone please help a VBA rookie find out where I'm going wrong?

Any help would be GREATLY appreciated!!!