Hi,

Suppose I have the follow table and field structure:

Table A

Field A,B,C

Field C is a calculate field where A are multiplied by B.

What I need is to change the value of field C by hand if I don't like the result of the calculation.

Since field C can't be modified because is a calculation filed.

I tried to setup a new field D where D is a number field and setup the auto enter a calculation where the field D is equal to field C. and check the don't overrigth if there is a value. So I can change the value if I want and clear the field to show the calculated value, but....

But the field keep always empty.

Someone...

Best regards,

André

PS. Sorry for my English.....

If ( isempty ( D ) ; A * B ; D )

but you might also try just A * B as your auto-enter calculation since such a field is modifiable.