F5 with your cursor in this field or use the Toolkit 
Calc Current Value option. This will recalculate the value in this field based on the initial cost, expected life, and salvage value information.The General tab allows you to document basic information about the furniture piece. You can enter a short description of the item as well as its type, quantity, bar code, manufacturer, serial number, condition, installation date, replacement date, and replacement cost.
The Current Value is a calculated field. Press F5 with your cursor in this field or use the Toolkit Calc Current Value option. This will recalculate the value in this field based on the initial cost, expected life, and salvage value information.