sencha touch 2 - ST2.1 vs ST2.2 chart sprite style renderer -

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with st2.1, had scatter graph renderer function changing sprite rotation , color based on values in store. working well. upgraded st2.2.0 , i'm having trouble rebuilding same function.

code st2.1 - working.

series: [                     {                         type: 'scatter',                         xfield: 'local_date_time',                         yfield: 'wind_spd_kt',                         marker: { ...                             },                         style: {                                renderer: function (target, sprite, index, storeitem) {                                         var sweather = ext.getstore('sun');                                         if (index < sweather.getcount() ){                                             target.rotationrads = storeitem.data.sun_dir;                                             if  (storeitem.data.sun_spd_kt < 10) {                                                   target.fill = '#ff0000'; //red                                                  //console.log ( index + ' : <10  :' + storeitem.data.sun_spd_kt )                                              }                                             else { target.fill = '#00ee00'; } //green                                         }                                     }                         },

code in st2.2.0 tried:

style: {                             renderer: function (sprite, config, rendererdata, index) {                                         sprite.rotationrads = rendererdata.store.data.all[index].raw.sun_dir                                         sprite.attr.fillstyle = '#ff0000'                                         }                                     }

has used "renderer" in st2.2.0?

i made solution problem. try following ? 

renderer: function (sprite, config, rendererdata, index) {     if (index % 2 == 0) {         return { strokestyle: 'red' };     } }

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