How can I use a query sum in a form formula in access 2000?

[Guest]

I am making a billing program in access 2000. I have formulas in my forms to
calculate prices. I have my base prices in a table and sum them with a
query. I can't make the query work in my formula.

 

[John Vinson]

I am making a billing program in access 2000. I have formulas in my forms to
calculate prices. I have my base prices in a table and sum them with a
query. I can't make the query work in my formula.

Then fix the error in the formula.

If you would like help doing so please post the expression you're
using so we can see it.

John W. Vinson[MVP]