Fixing problem on tooltip with undefined values
Fixing problem on tooltip with undefined values

martinmanzo/britecharts,jenjwong/britecharts,crisscrossed/britecharts,Golodhros/britecharts,bung87/britecharts,martinmanzo/britecharts,bung87/britecharts,jenjwong/britecharts,crisscrossed/britecharts,martinmanzo/britecharts,bung87/britecharts,Golodhros/britecharts,jenjwong/britecharts,Golodhros/britecharts,crisscrossed/britecharts