Layout cell Border in Material Skin

hi everybody.

I need some help with layout to hide the cells border of two cells in a way that che cells seems to be a single cell.

i try with:
layout7b.cells(“a”).cell.style.border = “none”;
layout7b.cells(“a”).cell.style.borderBottomColor = “white”;
layout7b.cells(“a”).cell.style.borderBottomStyle = “none”;

layout7b.cells(“b”).cell.style.border = “none”;
layout7b.cells(“b”).cell.style.borderTopColor = “white”;
layout7b.cells(“b”).cell.style.borderTopStyle = “none”;

but nothing seems to run correctly i continue to have a line that divides the two cells.

How can i do ?

I’m using Material Skin.

Thanks to everybody

Please Help ? Sematik Christmas is near?

Thanks