Annotated Timeline : Background grid in front of the last line

[FabGre]

Hello,

I let you see the picture enclosed. I don't understand why the grid is in front of my orange line and I didn't find any information googling that. Perhaps I can't find the good words..

Any ideas ?

Thanks,

[asgallant]

That doesn't look like a Google Visualization Annotated Timeline chart to me, are you sure you're in the right place?  If you post the code that builds the chart, I might be able to point you to where you need to go for help.