Easy query calculus

[alka]

I have 3 column

Column 1 from another queryA has the field ValueA


Column 2 from another queryB has the field ValueB
and I want my 3rd column to be: =[queryA].[ValueA]-[queryB].[ValueB]

I tried to put that in Criteria but I'm pretty sure it is not there

[alka]

SOLVED: had to put the code in the field like this: Column3Value: [queryA].[ValueA]-[queryB].[ValueB]