[libreoffice-users] how to add RegressionCurves to Chart using BASIC

I found how to add regression curves using Java, can it  been done using 
Basic ?
if found no methods to add first a RegressionCurveContainer
and to add a RegressionCurve to this container ?

Thanks for any hint



XDataSeries[] dataSeriesArr = getDataSeries(chartDoc);

    XRegressionCurveContainer rcCon = UnoRuntime.queryInterface( 
XRegressionCurveContainer.class, dataSeriesArr[0]);

    XRegressionCurve[] curves = rcCon.getRegressionCurves();

    XRegressionCurve curve = 
Lo.createInstanceMCF(XRegressionCurve.class, 
"com.sun.star.chart2.LinearRegressionCurve");   // for a linear 
regression curve
    rcCon.addRegressionCurve(curve);

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