Hi
When placed inside sandpit
var czml = [ ..... ]
The code displays a polyline correctly
When placed in a file 'gb.czml' and called from the following (and added to Sandpit example 'CZML Datasource'
Sandcastle.addToolbarButton('Beam', function() {
viewer.dataSources.add(Cesium.CzmlDataSource.load('../../nbn/czml/gb.czml'));
});
I get the following error (thats NOT shown in the var czml ...
"SyntaxError: Unexpected token ]" in the console
Any ideas please 
Thanks
Graham
======czml start============
[
{
"id" : "document",
"name" : "N1A_TX_-1.0_dB_Contour.czml",
"version" : "1.0"
},
{
"id" : "Beam_49_Ch_1",
"name": "Beam_49_Ch_1",
"description" : "<TABLE border=\"1\"><TR><TD><B>Variable</B></TD><TD><B>Value</B></TD><TD><B>Unit</B></TD></TR><TR><TD>Channel ID</TD><TD>Beam_49_Ch_1</TD><TD></TD></TR><TR><TD>Channel Size</TD><TD>262.5</TD><TD>MHz</TD></TR><TR><TD>Gateway</TD><TD>6</TD><TD></TD></TR><TR><TD>Frequency</TD><TD>19.744 to 20.0065</TD> <TD>GHz</TD></TR><TR><TD>Directivity</TD><TD>54.17</TD> <TD>dBi</TD></TR><TR><TD>EIRP</TD><TD>68.54</TD> <TD>dBi</TD></TR></TABLE>",
"position" : {
"cartographicDegrees" : [150.3,-36.675,0]
},
"point": {
"color": {
"rgba": [255, 255, 0, 255]
},
"pixelSize": {
"number": 5
}
}
},
{
"id" : "Beam_49_Ch_1",
"name" : "-1.0",
"description" : "<TABLE border=\"1\"><TR><TD><B>Variable</B></TD><TD><B>Value</B></TD><TD><B>Unit</B></TD></TR><TR><TD>Channel ID</TD><TD>-1.0</TD><TD></TD></TR><TR><TD>Channel Size</TD><TD>262.5</TD><TD>MHz</TD></TR><TR><TD>Gateway</TD><TD>6</TD><TD></TD></TR><TR><TD>Frequency</TD><TD>19.744 to 20.0065</TD> <TD>GHz</TD></TR><TR><TD>Directivity</TD><TD>53.17</TD> <TD>dBi</TD></TR><TR><TD>EIRP</TD><TD>67.54</TD> <TD>dBi</TD></TR></TABLE>",
"polyline" : {
"positions" : {
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},
"material" : {
"solidColor" : {
"color" : {
"rgba" : [0, 0, 255, 255]
}
}
},
"width" : 1
}
},
]
=============czml end===============