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problem with changing enum value The record has never been selected

Greeting everyone

i've created a new form with that now i'm trying to change the statues on that form so i've created a new enum

and i've crated action menu for every status as you see here below

also i've created class for those actions

static void main(Args _args)
{
    GovernmentIdTransStatus   governmentIdTransFlow;
    GovermentIdTrans                   argsGovermentIdTrans, govermentIdTransTmp;
    FormDataSource                  fds;


    if (_args.record().TableId == tableNum(GovermentIdTrans))
    {
        argsGovermentIdTrans = _args.record();

        if (_args.parmEnumType() != enumNum(GovernmentIdTransStatus))
        {
            throw error("@SYS104799");
        }

        governmentIdTransFlow = _args.parmEnum();

        ttsBegin;
            govermentIdTransTmp.SubmitStatus = governmentIdTransFlow;
            govermentIdTransTmp.doUpdate();
        ttsCommit;

        fds = argsGovermentIdTrans.dataSource();
        fds.research(true);
    }

    else
    {
        throw error("@SYS104799");
    }

}

when i pressed on anyone of those status i've got error message

Cannot edit a record in GovermentIdTrans (GovermentIdTrans).
The record has never been selected.

how can solve this problem?

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