Allow only one row selection, per table section?

I am using a table and want to allow only one row selected per section. I added the sectionS to every row to identify the sections.

for (var i = 0; i < temps.length; i++) {
 
        if (temps[i].z_calc_id == _args.z_lookup) {
            Ti.API.info('8', temps[i].z_title);
            Ti.API.info('8', temps[i].z_scale);
            Ti.API.info('8', temps[i].z_value);
 
            var z_calc_id = temps[i].z_calc_id,
                z_q_id = temps[i].z_q_id,
                trHeader = temps[i].z_header,
                z_title = temps[i].z_title,
                points = temps[i].points;
 
            x++;
 
            var p = temps[i].z_value;
 
            if (p < 0) {
                totalPointsLow += p;
            } else {
                totalPointsLow = 0;
            }
 
            if (p > 0) {
                totalPointsHigh += parseInt(p);
            }
 
            if (trHeader == 1) {
                sectionS++;
 
                var tblRow = Ti.UI.createTableViewRow({
                    points : points,
                    height : 40,
                    selectionStyle : 0,
                    touchEnabled1 : false,
                    bubbleParent : false,
                    backgroundColor : '#f8f3f8'
 
                });
                tblRow.add(Ti.UI.createLabel({
                    text : z_title,
                    color : 'black',
                    textAlign : 'center',
                    width : Ti.UI.FILL,
                    height : Ti.UI.FILL,
                    right : 0,
                    left : 0,
                    font : {
                        fontSize : 15,
                        fontFamily : myFontName
                    },
                    touchEnabled : false,
                    bubbleParent : false
                }));
            }
 
            if (trHeader == 0) {
                var tblRow = Ti.UI.createTableViewRow({
                    points : points,
                    hasCheck : true,
                    height : Ti.UI.SIZE,
                    sectionS : sectionS
                });
 
                tblRow.add(Ti.UI.createLabel({
                    text : z_title,
                    color : 'black',
                    textAlign : 'left',
                    width : 'auto',
                    height : Ti.UI.SIZE,
                    left : '16',
                    font : {
                        fontSize : 12,
                        fontFamily : myFontName
                    }
 
                }));
            }
 
            data.push(tblRow);
 
        }
    };

tableview.addEventListener('click', function(e) {
 
        var index = e.index;
        var section = e.section;
        var row = e.row;
        var rowdata = e.rowData;
 
        //alert(e.row.sectionS);
 
        if (e.row.sectionS)
            var selectSection = e.row.sectionS;
 
        if (e.row.sectionS == selectSection) {
 
            alert(e.row.sectionS);
 
 
            chosenItems = [];
            chosenItems.push(e.row.sectionS);
            Ti.API.info('info', chosenItems);
 
        }
 
        //Ti.API.log('info',e.row.sectionS);
 
        if (e.row.touchEnabled1 === false) {
            return;
 
        }
 
        row.hasCheck = true;
        Ti.API.info(e.row.selected);
        if (!e.row.selected) {
            e.row.backgroundColor = '#f00';
            e.row.selected = 1;
        } else {
            e.row.backgroundColor = '#fff';
            e.row.selected = 0;
        }
 
        for ( i = 0; i < x; i++) {
            if (e.row.selected && e.index == i) {
                Score = Score + parseFloat(e.row.points);
            } else if (!e.row.selected && e.index == i) {
                Score = Score - parseFloat(e.row.points);
            }
        }
 
        results = showFullName(Score);
 
        if (Score > totalPointsHigh) {
            scoreLabel.text = "Check Your Selections";
        }
 
        if (Score > totalPointsLow) {
            scoreLabel.text = "Check Your Selections";
        }
 
        if (results === undefined) {
            results = "Check Your Selections";
        }
 
        scoreLabel.text = "Points: " + Score.toFixed(2) + " = " + results;
 
    });