I can't get my sum to work

[#1]

Morning everyone,

Can someone help me with the following sum please;

I'm trying to sum all AUMValue where the AUM_StartAt is the minimum within that field, I've got the following but it doesn't work

=sum(if(AUM_StartAt=Min(AUM_StartAt),AUMValue))

Can anyone help please?

[#2]

if you can attache your qvd file. so we can place the function there.

[#3]

The above worked Massimo, I just changed the Max for Min....thanks very much