´No data to display´ Using Fusioncharts with Tcl

I have problems creating the XML string. I only see the message ´No data to display´. In my .tcl file I have:

set strXMLgrafico "<graph caption='Distribucion Normal de Rendimiento Academico' subCaption='(Curso Administracion de Proyectos I)' xAxisName='Promedio' yAxisName='Densidad de Probabilidad' yAxisMaxValue='1'  divLineColor='91AF46' divLineAlpha='30' alternateHGridAlpha='6' canvasBorderColor='666666' baseFontColor='000000' lineColor='91AF46' numVDivlines='2' showAlternateVGridColor='0' anchorSides='2' anchorRadius='15' showValues='1'>"
    set strXML " "
    for {set i 0} {$i < [llength $datos]} {incr i} { 
     set strXMLdatos [ concat "<set name='[lindex $datos $i]' value='[lindex $datos $i]' />" ]
     append strXML $strXMLdatos 
    }
    set listaDatos [concat $strXMLgrafico $strXML "</graph>"]

And then I call the string listaDatos in the .adp file

var barras = new FusionCharts("../indicadores/flash/FCF_Line.swf","barras", "600","300");
barras.setXMLData("@listaDatos@");
barras.render("chartdiv1");

This is the code when I click on "View source code" in the browser:

barras.setXMLData("&lt graph caption='Distribucion Normal de Rendimiento Academico' subCaption='(Curso Administra...

I tried changing characters, i.e. < for

´&#60´; , lt

and nothing.

Thank you.