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Reference Subform control within the subform in Ms Access

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Last Modified: 2019-02-02
Hi people There!

I having problems assigning a bound control within a sub form called sfrmCostofSales subform] see the photo below . I want a control called stdcost to be updated by un bound control called txtperformance which carries special calculation for cost of sales , I tried the VBA code below , but nothing is working:

Private Sub Form_BeforeInsert(Cancel As Integer)
Me.StdCost = Forms![frmCustomerInvoice]![sfrmCostofSales subform].Form![txtPerformance]
End Sub

The parent form is called frmCustomerInvoice , could it be I'm using a wrong event.

Instead of entering calculation of cost of sales per unit manually I want this control called stdCost which is bound to the table to be update by this unbound control within the datasheete subform called sfrmCostofSales subform] which calculate the correct cost of sales

Kindly help!

SubFormCosting.png

Regards

Chris
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