Trying to sum numberic values in the footer of a continuous form

I have a continuous form, which is actually a sub-form on a main form, with a numeric field in the detail.  Then in the footer I'm trying to sum those values.  

The field name in the detail is a calculated number named txtAmount

Then in the footer I have:

=Sum([txtAmount])

Isn't working.  Why?
SteveL13Asked:
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Scott McDaniel (Microsoft Access MVP - EE MVE )Infotrakker SoftwareCommented:
Try using the same formula in the Sum method as you're using for the Calculated Field.
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SteveL13Author Commented:
Isn't working.  Here is the formula I have in the calculated field:

=[txtQuantity]*[txtRate]

When I copy/paste that into the control for the field in the footer I get just the value of the calculated field in the first record on the continuous form.
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Scott McDaniel (Microsoft Access MVP - EE MVE )Infotrakker SoftwareCommented:
Are you doing this in the Footer of the Subform?
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SteveL13Author Commented:
Yes.
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Gustav BrockCIOCommented:
Try with either:

    =Sum([txtQuantity]*[txtRate])

or:

    =Sum([Quantity]*[Rate])

if Quantity and Rate are the names of the fields of the recordsource.

/gustav
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SteveL13Author Commented:
Neither worked.
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Scott McDaniel (Microsoft Access MVP - EE MVE )Infotrakker SoftwareCommented:
Is the Calculated Field in the Query? You might try doing your calculation there, and then SUM the field from the Query.
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Gustav BrockCIOCommented:
Then, I guess, the footer is on the main form. If so, you will have to refer to the controls on the subform.

/gustav
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Jeffrey CoachmanMIS LiasonCommented:
You never clearly states what "Footer" you were referring to...
In any event, ...You cannot sum a "Control" (txtAmount)
...you must sum the "Field" (Amount)

So as Scott suggests, ...make the calculation a field in the query, then you can sum it pretty much wherever you like.
sums galoresimple sample attached

JeffCoachman
Database80.mdb
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SteveL13Author Commented:
All helped.  Thanks.
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Gustav BrockCIOCommented:
You are welcome!

/gustav
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Jeffrey CoachmanMIS LiasonCommented:
;-)
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