Delete cell style

Is there a way to delete or override the class loaded from an XML file in a cell?

The text styles assigned through
     grid.this.setRowTextStyle (…
will override css class settings, also for common setting you can use

    grid.cells(id,index).setFont(
    grid.cells(id,index).setTextColor(
    grid.cells(id,index).setBgColor(
    grid.cells(id,index).setHorAlign(

At last you can access cell className property directly as

    grid.cells(id,index).cell.className