[amibroker] PlotText problem when using SelectedValue

["ozzyapeman" <zoopfree@xxxxxxxxxxx>]

I've used PlotText successfully before, but seem to have a problem when using it with SelectedValue. Hope someone can help.

What I am trying to achieve is pretty simple - When I click on a bar, I want to see the value of the slope of the 10-period linear regression line. 

This is what I have:

SlopeTest    = LinRegSlope(C, 10);

PlotText( "Slope\n " + NumToStr( SelectedValue( SlopeTest ) ),  SelectedValue( BarIndex() ),  L , colorBlack );

I keep getting an error, "argument #3 has incorrect type..."


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