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why wont it work!!
field name Type Options/comments
Amount calulation Unstored,= Let([ total=unit price + car park;discount=total*Discount rate];total-discount
it puts in the unit price to amount it will subtract the discount if entererd but wont add car park where am i going wrong
The expression looks correct. Check the value of your car park field. Make sure that you have a value entered in that field.
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