How can we update the modified date/time of a table

I need to backdate the modified datetime of a particular table (not for the data reocord). How can i do this? i am using CUS layer of the dynamics ax 2009.

yourtable.overwriteSystemfields(true);

An example with custInovicejour

new OverwriteSystemfieldsPermission().assert();

custInvoiceJour.overwriteSystemfields(true);
custInvoiceJour.(fieldNum(CustInvoiceJour,modifiedDateTime)) = DateTimeUtil::utcNow();
custInvoiceJour.doUpdate();

CodeAccessPermission::revertAssert();

Hi XBB,

I executed the above code part by writing it in a job. but i got below error. please advice me what can i do?
(my account has admin privileges).

Request for the permission of type ‘OverwriteSystemfieldsPermission’ failed.
(S)\Classes\OverwriteSystemfieldsPermission\demand
(S)\Classes\xRecord\overwriteSystemfields
(C)\Jobs\Job43 - line 8

Set the code on a class an called from server side, here a code working…

This code has to be on a class…

static server void method1()
{
CustTable custTable;

new OverwriteSystemfieldsPermission().assert();

ttsBegin;

select firstOnly forUpdate custTable;

custTable.overwriteSystemfields(true);
custTable.(fieldNum(custTable,modifiedDateTime)) = DateTimeUtil::utcNow();
custTable.doUpdate();

ttsCommit;

CodeAccessPermission::revertAssert();
}

Thanks XBB,
It is working fine.

Further could you explain me how do i change the “Changeby” property in a AX table?

This field is modified everytime someone modified the object.

Of course. bu i want to back date it. How can i do this?

I heard about UtilIdElements table which contains all the ax table properties.
How can i update the modifieddatetime figure in that table?

//BGFindVATDiff is the name of my table

select forupdate UtilIdElements
where UtilIdElements.name ==‘BGFindVATDiff’;

ttsbegin;

UtilIdElements.modifiedDateTime = DatetimeUtil::date(); // this line of the code inorrect
UtilIdElements.doUpdate();

ttscommit;