setColumnIds doesn't work for me

I use the setColumnIds(“custom1,custom2,custom3”) property for my grid, but I still see c0,c1,c2…etc on the server side.

Shouldn’t I be able to reference by custom column id?

setColumnIds just assign IDs to the columns, if you want to use them instead of column indexes with dataprocessor, you need to add next command to dataprocessor’s init