BC: How to set an attribute in the validateEntity method

Hi All,
a little question that hopefully someone knows the answers to.
We override the validateEntity() method in our Entity Objects to perform validation. During our validation based on the value of a (bound to a database column) attribute, we conclude that another attribute (bound to another database column) needs to be set to a specific value.
For example: we have a table with columns A and B. The user can edit both, but when the value of column A is set to 'value1' the value of column B is set to '0' in the validateEntity() method. (When the value of column A is something different the user may fill anything in column B).
Because all our validation and logic is centralised in the validateEntity() method we would also like to have this logic in there.
However we face some problems:
If we use setAttribute() or setAttributeInternal() the validation is run again (and again, and again, eg a loop). I can get out of the loop, but i really don't want the validation to be done again.
So i looked up the documentation on oracle.jbo.server.EntityImpl and i specifies that i should use populateAttributeAsChanged().
I have tried that, but now the user gets to see 'JBO-25014: Another user has changed the row...'. The same result with populateAttribute().
I tried to change the attribute to refresh after insert/update, but that doesn't help.
Can anybody help?
Thanks in advance.
Regards,
Robert

What if I wanted to "reset" one attribute when validation fails, I can do this but I don't see the error message.
my method looks like this:
public boolean validateDatumEffectueringAlsStatusIsDrie() {
if (new Number(3).equals(getStatus()) &&
getDatumEffectuering() == null) {
setStatus((Number)getPostedAttribute(STATUS));
return false;
return true;
This probably fires the method twice when status was set to 3, and the second time it does not fail because status is set back to the value that was not 3, so I don't see the error message that was shown the first time.
So how is this done properly?
The reason I do this is because DatumEffectuering is readonly when status is 3 so when the page refreshes after the validation the empty date field is readonly.... I need the status to be reset after validation of the entity fails.
Thanks in advance!

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