Partial sum

Danielf

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I have a form( based on a query) with 2 text boxes .In the first box, there are numbers;

I would like to have in the second box; the
partial total sum (In each Text box2, I need the sum of all text box1 till this record );

For example : tbox1 : 100 tbox2 100
tbox1 : 50 tbox2 150
tbox1 :200 tbox2 450


The last tbox2 is the sum of all tbox1


Is there a function performing this?

Thanks

Daniel
 

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