Editable Grids Lookup Field Custom Filter

Hello guys,

Lately I've been exploring Dynamics 365's new feature, Editable Grids.
On normal form, it is possible to add custom filter to a lookup field using Javascript fetchXml (addPreSearch, addCustomFilter). Is it possible to add custom filter on editable grids lookup cell using the same method? I've searched everywhere but I don't see any clue about this. Microsoft's documentation also doesn't state anything (https://msdn.microsoft.com/en-us/library/mt788311.aspx). Any help or clue will be appreciated.

P.S.: Sorry if this post turned out to be in the wrong place.

Thank you.