How to disable Line Chart (small multiples) Vertical Gridlines

[music43]

Hi

I have a line chart with small multiples and for some reason the option to disable the vertical gridlines is greyed out but the lines are visible. I'm not refering to the small multiples border (which I want to keep).

Any ideas how I remove them? As the option is greyed out, I can't even change the colour to white...

Thanks

Oli

[miTutorials · Accepted solution]

This must be a bug! try to remove small multiples and see if you are able to remove the gridlines and then add small multiples back.

PS: I don't even see Vertical gridlines on my line chart - I only have Horizontal gridlines.