Formula calculated database field tries to insert null

Good Morning,
I have 3 database text items Amount , rate and result.
I input the two values (Amount and rate) and using the formula property "result" gets the calculated value.
On display all the values are shown correctly but when trying to save my information the text field "result" is trying to insert null.
Any suggestions?
Forms 11g
Thank you in Advance

794018 wrote:
Good Morning,
I have 3 database text items Amount , rate and result.
I input the two values (Amount and rate) and using the formula property "result" gets the calculated value.
On display all the values are shown correctly but when trying to save my information the text field "result" is trying to insert null.Formula item should not be database item. And also inserting result column value into database is not good idea.
Then after if you want to save it. create result database item and write trigger (When-Validate-Item) on both amount and rate filed and at trigger code, write
:result:=:amount*:rate;To display the result on form, create non database item and change property to formula and write the formula.
Hope this will help you
If someone's response is helpful or correct, please mark it accordingly.

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Formula calculated database field tries to insert null

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