Display Objects from Multiple DataSources on a Map

// buildings var blDataSource = 'bl_ds'; var blGeometryFields = ['bl.lon', 'bl.lat']; var blTitleField = 'bl.bl_id'; var blContentFields = ['bl.address1', 'bl.city_id', 'bl.state_id', 'bl.ctry_id']; var blMarkerProperties = {     radius: 8,     fillColor: '#377eb8' }; this.mapControl.createMarkers(     blDataSource, blGeometryFields,     blTitleField,     blContentFields,     blMarkerProperties ); // properties var prDataSource = 'pr_ds'; var prGeometryFields = ['property.lon', 'property.lat']; var prTitleField = 'property.pr_id'; var prContentFields = ['property.area_manual', 'property.value_market', 'property.value_book']; var prMarkerProperties = {     radius: 12 }; this.mapControl.createMarkers(     prDataSource,     prGeometryFields,     prTitleField,     prContentFields,     prMarkerProperties );

// buildings bl_list_onShowBuildings: function(rows) {      var selectedRows = this.bl_list.getSelectedRows(rows);      var restriction = new Ab.view.Restriction();     if(selectedRows.length !== 0 ) {         for (var i = 0; i < selectedRows.length; i++) {             restriction.addClause('bl.bl_id', selectedRows[i]['bl.bl_id'], "=", "OR");         }     } else {         restriction.addClause('bl.bl_id', 'null', "=", "OR");     }     this.mapControl.showMarkers('bl_ds', restriction); } // properties pr_list_onShowProperties: function(rows) {       var selectedRows = this.pr_list.getSelectedRows(rows);      var restriction = new Ab.view.Restriction();     if(selectedRows.length !== 0 ) {         for (var i = 0; i < selectedRows.length; i++) {             restriction.addClause(                 'property.pr_id', selectedRows[i]['property.pr_id'], "=", "OR");     }     } else {         restriction.addClause('property.pr_id', 'null', "=", "OR");     }     this.mapControl.showMarkers('pr_ds', restriction);  }