Bear with me, I am very new to access...
I have a contributor table and a donations table. I also have a form for each.

On the contributors form I have displayed a child form generated from the
donation table which shows the donations that contributor has made.  I would
like to have a few fields on the parent which totals info listed in the child.

For example:  Count of donations made, Total value of those donations, and
Based on the amount the individual has donated I would like Access to assign
a category.  Friend, Supporter, patron...    I was told to use the following
formulas
Count of Donations:
=dcount("DonationID", "Donations", "ContributorID = " & me.lngContributorID)

Sum of Donations:
=dsum("DonationAmount", "Donations", "ContributorID = " & me.lngContributorID)

Where the me indicates the current form.  I tried replacing that with the
actual form name because I
read that "me" won't work in the control source of calculated controls.  This
would be the new formula  

=DCount("DonationID","Donations","ContributorID = " & [Forms!Donations1!
Contributor ID].lngContributorID)

I am still perplexed on what the lng would do, or how to make this work.

Can anyone please assist?

I appreciate any assistance!!