想请教各位，我在OF自带的溃坝算例上进行了修改，试图将原来矩形相区域改为圆形，我使用了cylinderToCell给圆柱区域添加相分数，但是在setFields这一步出错，错误提示是说在cylinderToCell中没有找到定义的半径radius，可是我分明定义了半径大小。请各位指正问题，感谢。
下面是错误提示：

--> FOAM FATAL IO ERROR: (openfoam-2012)
Entry 'radius' not found in dictionary "cylinderToCell"


file: cylinderToCell at line 29 to 36.

    From bool Foam::dictionary::readCheck(const Foam::word&, T&, const Predicate&, Foam::keyType::option, bool) const [with T = double; Predicate = Foam::MinMax<double>]
    in file /home/pawan/OpenFOAM/OpenFOAM/OpenFOAM-v2012/src/OpenFOAM/lnInclude/dictionaryTemplates.C at line 372.

FOAM exiting

下面是我的setFieldsDict文件内容：

defaultFieldValues
(
    volScalarFieldValue alpha.water 0
);

regions
(
    cylinderToCell
    {
        sourceInfo
		{
			p1 (0.5 0 0.85);
			p2 (0.5 0.1 0.85);
			radius 0.15;
		}
        fieldValues
        (
            volScalarFieldValue alpha.water 1
        );
    }
);

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