compare base enums in a query

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static void Compare_Base_Enums(Args _args)
{
PurchStatus purchstatus;
PurchTable purchTable;
;

purchstatus = Global::enum2int(PurchStatus::Invoiced); // this statement returning baseEnum element value

while select purchTable where purchTable.PurchStatus < enum2int(PurchStatus::Canceled)
{
info(strfmt("%1",purchTable.PurchStatus));
}

}