public ValueEval getRef3DEval(Ref3DPxg rptg) {SheetRangeEvaluator sre = createExternSheetRefEvaluator(rptg.getSheetName(), rptg.getLastSheetName(), rptg.getExternalWorkbookNumber());return new LazyRefEval(rptg.getRow(), rptg.getColumn(), sre);}