ShinobiChart memory problem in UITableViewCell

[michealb1969]

Can i ask if anyone knows the best way to use ShinobiChart premium in a subclassed UITableViewCell?

I am currently displaying a simply pie chart or donut chart with just 2 values, but memory does not appear to be released when UItableView is scrolled out of view and when a cell comes back into view containing the chart memory increases, until finally crash memory error!

//values declared as
@property(nonatomic, retain)ShinobiChart *donutChart;
@property(nonatomic, retain)NSDictionary* graphData;
 
 graph and data initialised wirthin the tableviewcell
 
 self.graphData = @{@"val1": [NSNumber numberWithDouble:val1], @"val2" :[NSNumber val2]};
        
 self.donutChart = [[ShinobiChart alloc]initWithFrame:self.chartView.bounds];
 self.donutChart.licenseKey = @"MY LICENSE KEY";
 self.donutChart.datasource = self;
 self.donutChart.delegate = self;
 self.donutChart.legend.hidden = YES;
 self.donutChart.backgroundColor = [UIColorclearColor];
        
[self.chartView addSubview:self.donutChart];  // chartview is simply a UIView to contain the graph

Delegate methods;

 
- (NSInteger)numberOfSeriesInSChart:(ShinobiChart *)chart {
    return 1;
}
 
-(SChartDonutSeries *)sChart:(ShinobiChart *)chart seriesAtIndex:(NSInteger)index {
    
     SChartPieSeries* pieSeries = [[SChartPieSeriesalloc] init];
    pieSeries.style.showFlavour = YES;
    pieSeries.style.showCrust = YES;
    
    
     pieSeries.style.flavourColors = [NSMutableArrayarrayWithObjects:[UIColorcolorWithHexString:PRIMARY_COLOUR_ASSESSMENTS], [UIColorcolorWithHexString:PRIMARY_COLOUR_CARECIRCLE], nil];
    
    pieSeries.selectedStyle.protrusion = 0.f;
     pieSeries.selectionAnimation.duration = @0.4;
    pieSeries.selectedPosition = @0.0;
     //pieSeries.innerRadius = 10.f;
    pieSeries.outerRadius = 50.f;
    
     pieSeries.gesturePanningEnabled = NO;
    
    
    
     UIColor* colour = [UIColorcolorWithHexString:MAIN_COLOUR];
    UIColor* colour1 = [UIColor colorWithRed:[colour red] green:[colour green] blue:[colour blue] alpha:0.3];
 
    
     [pieSeries.stylesetFlavourColors:[NSMutableArrayarrayWithArray:[NSArrayarrayWithObjects:colour1, colour, nil]]];
 
     SChartPieSeriesStyle *style = [[SChartPieSeriesStylealloc] init];
     style.labelFontColor = [UIColorredColor];
    style.showCrust = YES;
     style.crustThickness = [NSNumbernumberWithFloat:5.0];
     style.crustColors = [NSMutableArrayarrayWithObjects:[UIColorwhiteColor], [UIColorwhiteColor], nil];
 
    
    return pieSeries;
 
}
 
 
- (NSInteger)sChart:(ShinobiChart *)chart numberOfDataPointsForSeriesAtIndex:(NSInteger)seriesIndex {
    
     returnself.graphData.allKeys.count;
}
 
- (id<SChartData>)sChart:(ShinobiChart *)chart dataPointAtIndex:(NSInteger)dataIndex forSeriesAtIndex:(NSInteger)seriesIndex {
     SChartRadialDataPoint *datapoint = [[SChartRadialDataPointalloc] init];
    NSString* key = self.graphData.allKeys[dataIndex];
    datapoint.name = key;
    datapoint.value = self.graphData[key];
    return datapoint;

}