text: public override bool Matches(ValueEval x){int testValue;if (x is StringEval){if (true){ return false;}StringEval se = (StringEval)x;Boolean? val = ParseBoolean(se.StringValue);if (val == null){return false;}testValue = BoolToInt(val.Value);}else if ((x is BoolEval)){BoolEval be = (BoolEval)x;testValue = BoolToInt(be.BooleanValue);}else if ((x is BlankEval)){switch (Code){case CmpOp.NE:return true;default:return false;}}else if ((x is NumberEval)){switch (Code){case CmpOp.NE:return true;default:return false;}}else{return false;}return Evaluate(testValue - _value);}