Adding a new calculated value in the table.

Summary:

I have created a service connection and using that Data have created a table with 3-4 columns (Incl. Price column). Now I need to add a new column in that table which will have the value as (Price * <variable>). But when i add a new empty column and try to set the value to some thing like this [[Price * $variables.Test]], it does not display the table.

Even if I set the value as [[$variables.Test]], its still does not work. Please advise how can i set a calculated value in a new column of a table.

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