I've had a look at your db - your 'calling' field is on the main form, not a subform so your code needs to be:
=[Arrears and Income Report subform].form.[Addupofrec]
You had also missed out the form part of the source as highlighted in red
Thank you so much that solved it
might i touble you now for a more complex issue
you can see on tabs "Invoice" that look like this
Invoice Date PO Invoice Contractor Expense Code Lease Code Invoice Amount Status
28/09/2013 34606 1141 Platinum Landscapes 55 A 240.00
03/09/2013 35311 2021 Clean And Green 63 B 167.00
02/08/2013 35311 2015 Clean And Green 63 A 174.00
19/08/2013 34606 1121 Platinum Landscapes 55 A 240.00
Then though a query i group every thing an sum by expense type (55, 63 ect and by code (A, B C ect)
Site Code Lease Code Expense Code SumOfInvoice Amount
0289S A 52 £986.88
0289S A 54 £878.65
0289S A 55 £24,188.72
0289S A 58 £892.20
0289S A 62 £4,791.23
On a form that will be called Income and Exp
I need to lookup the details in other using a combo box on new page i want to select my expence code and from that fetch the sumofinvoice according to ecp type and code, Hope that makes sence
As I need to put togeather a full P&L whats your advise on this?
Thanks again