GRID: Ability to add custom options do header filter combo

Currently when i implement the combo filtering in the header, the available options in the dropdown are populated based on how many different cell values the grid has for the column. I would like to be able to put ANY amount of options in the combo.

For example i would like the combo to have the following options: [A, B, C, D, E] in spite of the grid column have only [A, D] cell values.

With other orders how can i implement the combo dropdown to have options independent of grid cell values?

Hello Nikolai.

Unfortunately such feature is not supported. We also not planning to extend it.

Too pity because the very first moment client saw the grid, he ASKED ABOUT THIS!!!

So if u do not want to lose clients better submit it to the dev team!