public void UnlinkSharedFormula()
{
SharedFormulaRecord sfr = _sharedFormulaRecord;
if (sfr == null)
{
throw new InvalidOperationException("Formula not linked to shared formula");
}
Ptg[] ptgs = sfr.GetFormulaTokens(_formulaRecord);
_formulaRecord.SetParsedExpression(ptgs);
//Now its not shared!
_formulaRecord.SetSharedFormula(false);
_sharedFormulaRecord = null;
}
