Hide multiple columns in grid

I am using dhtmlx suite…

and want to make multiple columns hidden in grid…

There is provision for making single column hidden

ie. grid.setColumnHidden(index,true)

So please give me the solution to hide multiple columns…

During grid initialization, you can use
grid.setColumnsVisibility(“true,false,false,true”);

the parameter - list of true, false values - which means visible or hidden columns