Dynamic bar chart - showing only specific bars

Hello,

I have a problem with a bar chart.

I use the bar chart with the event stream processor as data source and have as dimension date and time and as measure sensorvalues.

Now I would like only show the bars in the specific range (with an drop down to choose).

Is it possible to add this part with an script?

Something like adding a drop down menu and if you choose "green" on it then it will only display

the bars that in that specific range. I tried something like that:

if(DROPDOWN_1.getSelectedText()=="Green Lights"){

    CHART_1.setDataSelection({"Measures":"SENSORVALUE"});

}

But I don't know how to specify the value range in the script.

Thanks in advance.

Best Regards

Stefan