CGFloat usage = 0.0;
            if ([partMaintenance.thresholdUnit isEqualToString:@"Months"]) {
                usage = [robotPart.months floatValue];
            } else if ([partMaintenance.thresholdUnit isEqualToString:@"Distance"]) {
                usage = [robotPart.distance floatValue];
            } else if ([partMaintenance.thresholdUnit isEqualToString:@"Runtime"]) {
                usage = [robotPart.runtime floatValue];
            }

            robotPartCell.progress.progress = [partMaintenance.threshold floatValue] > 0.0 ? usage / [partMaintenance.threshold floatValue] : 0.0;