Formula in a database field

Hello,

I would define a formula in a field of my database and later use it in a crystal report. The idea is to make configurable the output.

The field contains for example "{table.field}+{table.field2}".

My problem is that Crystal doesn't interpret the formula and consider the field as text. The output shows the formula.

Is there a way for the content of the field is regarded as a formula?

I use CR 10.0.5.1506 and sql server 2008.

Thank you in advance for your help.

Regards,

Stephane